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- P elementClass of transposable elements that cause hybrid dysgenesis in eukaryotes
- P-siteThe P-site (for peptidyl) is the second binding site for tRNA in the ribosome. The other t
- P1-derived artificial chromosomeA P1-derived artificial chromosome, or PAC, is a DNA construct derived from the DNA of P1
- P14arfp14ARF (also called ARF tumor suppressor, ARF, p14ARF) is an alternate reading frame prote
- P53Mammalian protein found in humans
- PachygyriaPachygyria (from Greek pachy 'thick, fat' gyri) is a congenital malformation of the cerebr
- PachyteneThird stage of Prophase I of Meiosis
- PaenibacillusGenus of bacteria
- Pain in cephalopodsPain in cephalopods is a contentious issue. Pain is a complex mental state, with a distinc
- Pain in invertebratesWhether invertebrates can feel pain is a contentious issue. Although there are numerous de
- Pair bondBiological term
- Pair-rule geneGene involved in the development of segmented embryos of insects
- PalateRoof of the mouth
- Palatoglossus muscleThe palatoglossal muscle is a muscle of the soft palate and an extrinsic muscle of the ton
- PALB2Partner and localizer of BRCA2, also known as PALB2 or FANCN, is a protein which in humans
- PaleobiologyStudy of organic evolution using fossils
- PaleobotanyStudy of organic evolution of plants based on fossils
- PaleoecologyStudy of interactions between organisms and their environments across geologic timescales
- PaleogeneticsStudy of the past through preserved genetic material
- PaleovirologyPaleovirology is the study of viruses that existed in the past but are now extinct. In gen
- Palindromic sequenceDNA or RNA sequence that matches its complement when read backwards
- Pan-genomeAll genes of all strains in a clade
- PANDASHypothesis in pediatric medicine
- PandoravirusGenus of giant virus possessing a large double-stranded DNA genome
- PandorinaGenus of algae
- PanmixiaRandom mating
- PantoeaGenus of bacteria
- Pantoea agglomeransSpecies of bacterium
- Pantoea stewartiiSpecies of bacterium
- PantropyPantropy is a hypothetical process of space habitation or space colonization in which, rat
- PapillomaviridaeFamily of viruses
- ParabiosisLaboratory technique to study physiology
- ParablepharismeaClass of single-celled organisms
- Paracellular transportTransfer of substances by passing through space between cells
- Paracoccus (bacterium)Paracoccus is a genus of bacteria in the family Paracoccaceae (previously in the family Rh
- Paracoccus denitrificansSpecies of bacterium
- Paracrine signalingForm of localized cell signaling
- Parallel evolutionSimilar evolution in distinct species
- Paramecium aureliaSpecies of single-celled organism
- Paramecium caudatumSpecies of single-celled organism
- Paramesonephric ductPaired ducts in the mammalian embryo in the primitive urogenital structures
- ParamutationIn epigenetics, a paramutation is an interaction between two alleles at a single locus, wh
- Parapatric speciationSpeciation within a population where subpopulations are reproductively isolated
- Pararectal lymph nodesThe pararectal lymph nodes are lymph nodes that are in contact with the muscular coat of t
- Parasite-stress theoryTheory of human evolution
- ParasitologyStudy of parasites, their hosts, and the relationship between them
- Parasympathetic nervous systemDivision of the autonomic nervous system
- Parathyroid glandEndocrine gland
- Parathyroid hormoneMammalian protein found in humans
- Parathyroid hormone 1 receptorParathyroid hormone/parathyroid hormone-related peptide receptor, also known as parathyroi
- Parathyroid hormone 2 receptorParathyroid hormone 2 receptor is a protein that in humans is encoded by the PTH2R gene.
- ParatopeIn immunology, a paratope, also known as an antigen-binding site, is the part of an antibo
- ParenchymaVisceral tissue found inside organs of animals
- Parent–offspring conflictEvolutionary conflict arising from differences in optimal parental investment
- Parental careBehavior in animals of taking care of offspring
- Parental investmentParental expenditure that benefits offspring
- Parental loveFeeling of attachment towards progeny
- Parietal lobePart of the brain responsible for sensory input and some language processing
- Parramatta River virusParramatta River virus (PaRV) is an insect virus belonging to Flaviviridae and endemic to
- ParthenogenesisAsexual reproduction without fertilization
- Parthenos sylviaParthenos sylvia, the clipper, is a species of nymphalid butterfly found in south and sout
- ParvoviridaeFamily of viruses
- Passive transportTransport that does not require energy
- PasteurellaGenus of bacteria
- Pasteurella anatisPasteurella anatis, also Gallibacterium anatis is a Gram-negative, nonmotile, penicillin-s
- Pasteurella canisPasteurella canis is a Gram-negative, nonmotile, penicillin-sensitive coccobacillus of the
- Pasteurella dagmatisPasteurella dagmatis is a Gram-negative, nonmotile, penicillin-sensitive coccobacillus of
- Pasteurella multocidaSpecies of bacterium
- PasteurellosisMedical condition
- PatellaKneecap, bone covering knee joint
- Patent ductus arteriosusCondition where the ductus arteriosus fails to close after birth
- Patentable subject matterConcept in patent law
- Paternal age effectHealth effects of an older father at conception
- Pathetic fallacyAttribution of human emotion and conduct to non-human things
- Pathogen-associated molecular patternPattern of the immune system
- PathogenesisProcess by which a disease or disorder develops
- PathogenomicsPathogenomics is a field which uses high-throughput screening technology and bioinformatic
- Patrick MatthewScottish grain merchant, fruit farmer, forester, and landowner
- Paul D. N. HebertPaul David Neil Hebert OC FRSC (born 1947) is a Canadian biologist. He is founder and dire
- Paul LindnerPaul Lindner (1861 – 1945) was a German chemist and microbiologist, best known for discove
- PaulinellaGenus of single-celled organisms
- Pax genesFamily of transcription factors
- PAX6Protein-coding gene in humans
- PBR322Artificial plasmid
- Peak callingPeak calling is a computational method used to identify areas in a genome that have been e
- Pearl geneThe Pearl gene, also known as the "Barlink factor", is a dilution gene at the same locus a
- PectinStructural carbohydrate in the cell walls of land plants and some algae
- PectobacteriaceaeThe Pectobacteriaceae are a family of Gram-negative bacteria which largely consist of plan
- Pectobacterium carotovorumBacterial pathogen of several plants
- Pectoral axillary lymph nodesAn anterior or pectoral group consists of four or five glands along the lower border of th
- Pedigree chartDiagram showing the occurrence of traits
- PediococcusPediococcus is a genus of gram-positive lactic acid bacteria, placed within the family of
- Pediococcus acidilacticiSpecies of bacterium
- PelagibacteralesOrder of bacteria
- Peliosis hepatisPeliosis hepatis is an uncommon vascular condition characterised by multiple, randomly dis
- PelomyxaPelomyxa is a genus of giant flagellar amoebae, usually 500–800 μm but occasionally up to
- Pelvic liftPelvic lift (also known as pelvic tilt) is an exercise to strengthen the lower back, glute
- Pelvic splanchnic nervesSplanchnic nerves arising from sacral spinal nerves
- Pelvic thrustThrusting motion of the pelvic region
- PenetranceProportion of individuals that express the trait associated with an allele
- Penile sheathAlmost all mammal penises have foreskins or prepuces, although in non-human cases, the for
- Penile–vaginal intercourseForm of human sexual intercourse
- Penis fencingPenis fencing is a mating behavior engaged in by many species of flatworm, such as Pseudob
- Pentose5-Carbon simple sugar
- Pentose phosphate pathwaySeries of interconnected biochemical reactions
- Peopling of Southeast AsiaPrehistoric migrations
- PEP group translocationBacterial metabolic pathway
- Peppered moth evolutionSignificance of the peppered moth in evolutionary biology
- PeptideShort chains of 2–50 amino acids
- Peptide bondCovalent bond between amino acids in a protein chain
- Peptides (journal)Peptides is a monthly peer-reviewed scientific journal covering the biochemistry, neuroche
- PeptidoglycanPolymer in bacterial cell walls
- PeptidomimeticA peptidomimetic is a small protein-like chain designed to mimic a peptide. They typically
- PeptoniphilusGenus of bacteria
- Peptoniphilus asaccharolyticusPeptoniphilus asaccharolyticus is a species of bacteria belonging to the family Peptoniphi
- Pericardiacophrenic arteryThe pericardiacophrenic artery is a long slender branch of the internal thoracic artery.
- PeridinialesPeridiniales is an order of dinoflagellates.
- Peripatric speciationMode of speciation in evolutionary biology
- Peripheral membrane proteinMembrane proteins that adhere temporarily to membranes with which they are associated
- Peripheral visionArea of one's field of vision outside of the point of fixation
- PeriplasmRegion between the inner and outer membrane
- PeritoneumMembrane that forms lining of abdominal cavity or coelom
- PeritrichThe peritrichs (Latin: Peritrichia) are a large and distinctive group of ciliates.
- Peronospora hyoscyami f.sp. tabacinaSubspecies of single-celled organism
- PeronosporaceaeFamily of water moulds
- PeroxisomeType of organelle
- Persistence lengthThe persistence length is a basic mechanical property quantifying the bending stiffness of
- Personal genomicsBranch of genomics concerned with the genome of an individual
- Personal groomingCleaning and maintaining parts of the body
- PerspirationFluid secreted from sudoriferous glands
- PerticaPertica is a genus of extinct vascular plants of the Early to Middle Devonian (around 420
- PetalPart of most types of flower
- Peter Bogner (businessman)Peter Bogner (born 1964 in West Germany) is a German-American former media executive who i
- Peter SneathPeter Henry Andrews Sneath FRS, MD (17 November 1923 – September 9, 2011) was a British mi
- Peters's epauletted fruit batThe Peters's epauletted fruit bat (Epomophorus crypturus) is a species of megabat in the f
- Petite mutationpetite (ρ–) is a mutant first discovered in the yeast Saccharomyces cerevisiae. Due to the
- Petri dishShallow dish used to hold cell cultures
- Petrified woodFossilized remains of plants
- PetrifilmPlating system
- Petroleum microbiologyPetroleum microbiology is a branch of microbiology that deals with the study of microorgan
- PfiesteriaGenus of single-celled organisms
- Pfiesteria piscicidaToxic dinoflagellate species
- PGC-1αProtein-coding gene in the species Homo sapiens
- PhacusGenus of flagellate algae
- PhaeodactylumSpecies of single-celled organism
- PhagomyxidPhagomyxids are a group of obligate endoparasitic protists belonging to the subphylum Endo
- Phalanx boneDigital bone in the hands and feet of most vertebrates
- PhalloidinPhalloidin belongs to a class of toxins called phallotoxins, which are found in the death
- PharynxPart of the throat that is behind the mouth and nasal cavity
- PheneticsAttempt to classify organisms based on overall similarity
- PhenotypeComposite of the organism's observable characteristics or traits
- Phenotypic disparityPhenotypic differentiation within groups like species or higher taxa
- Phenotypic plasticityTrait change of an organism in response to environmental variation
- Phenotypic traitInherited characteristic of an organism
- PhenylalanineType of α-amino acid
- Phenylalanine hydroxylasePhenylalanine hydroxylase (PAH) (EC 1.14.16.1) is an enzyme that catalyzes the hydroxylati
- PhenylketonuriaAmino acid metabolic disorder
- PhilopatryTendency of animals to return to an area, especially to reproduce
- Philosophy of biologySubfield of philosophy of science
- Philosophy of evolutionBranch of philosophy of science
- PhloemSugar transport tissue in vascular plants
- Phosphatidic acidPhosphatidic acids are anionic phospholipids important to cell signaling and direct activa
- PhosphatidylcholineClass of phospholipids
- PhosphatidylethanolaminePhosphatidylethanolamine (PE) is a class of phospholipids found in biological membranes. T
- Phosphodiester bond–O– linkage between phosphoric acid and two other compounds
- PhosphofructokinasePhosphofructokinase (PFK) is a kinase enzyme that phosphorylates fructose 6-phosphate in g
- Phosphoinositide 3-kinasePhosphoinositide 3-kinases (PI3Ks), also called phosphatidylinositol 3-kinases, are a fami
- Phospholipase CPhospholipase C (PLC) is a class of membrane-associated enzymes that cleave phospholipids
- PhospholipidClass of lipids
- Phospholipid-derived fatty acidsChemotaxonomy markers of microoorganisms
- PhosphorylationChemical process of introducing a phosphate
- Photoactive yellow proteinIn molecular biology, the PYP domain (photoactive yellow protein) is a p-coumaric acid-bin
- PhotoautotrophOrganisms that use light and inorganic carbon to produce organic materials
- PhotobiologyScientific study of light's effect on living organisms
- PhotoheterotrophOrganism that uses light for energy but needs nutrients from elsewhere
- PhotomorphogenesisIn developmental biology, photomorphogenesis is light-mediated development, where plant gr
- PhotophosphorylationBiochemical process in photosynthesis
- Photoreceptor cellType of neuroepithelial cell
- PhotorespirationProcess in plant metabolism
- Photosensitivity in humansLight sensitivity or photosensitivity refers to a notable or increased reactivity to light
- Photosynthetic picoplanktonGroup of photosynthetic plankton
- Photosynthetic pigmentType of molecule
- PhotosystemStructural units of protein involved in photosynthesis
- Phouoibi WaronThe Phouoibi Waron (Manipuri: ꯐꯧꯑꯣꯢꯕꯤ ꯋꯥꯔꯣꯟ) or Phouoibi Warol (Manipuri: ꯐꯧꯑꯣꯢꯕꯤ ꯋꯥꯔꯣꯜ) i
- PhycologyBranch of biology concerned with the study of algae
- Phyletic gradualismTheory in evolutionary biology
- PhyllobacteriaceaeThe Phyllobacteriaceae are a family of bacteria. The most common genus is Mesorhizobium wh
- PhyllospherePlant surfaces as habitats for microorganisms
- PhylogenesisPhylogenesis (from Greek φῦλον phylon "tribe" + γένεσις genesis "origin") is the biologica
- Phylogenetic bracketingPhylogenetic bracketing is a method of inference used in biological sciences. It is used t
- Phylogenetic inertiaLimitations in evolution
- Phylogenetic inference using transcriptomic dataIn molecular phylogenetics, relationships among individuals are determined using character
- Phylogenetic networkGraph used to visualize evolutionary relationships, including reticulation events
- Phylogenetic nomenclaturePhylogenetic method in taxonomy
- Phylogenetic signalPhylogenetic signal is an evolutionary and ecological term, that describes the tendency or
- Phylogenetic treeBranching diagram of evolutionary relationships between organisms
- PhylogenomicsPhylogenomics is the intersection of the fields of evolution and genomics. The term has be
- Phylotypic stageIn embryology a phylotypic stage or phylotypic period is a particular developmental stage
- PhylumTaxonomic rank
- PhysarumPhysarum is a genus of mycetozoan slime molds in the family Physaraceae.
- Physcomitrella patensPhyscomitrella patens is a synonym of Physcomitrium patens, the spreading earthmoss. It is
- PhytobacterPhytobacter is a genus of Gram-negative bacteria emerging from the grouping of isolates pr
- PhytochorionGeographic area with a relatively uniform composition of plant species
- PhytoplanktonAutotrophic members of the plankton ecosystem
- PhytoplasmaGenus of bacteria
- PicoeukaryotePicoplanktonic eukaryotic organisms 3.0 μm or less in size
- PicoplanktonFraction of plankton between 0.2 and 2 μm
- Picornain 3CPicornain 3C (EC 3.4.22.28) is a protease found in picornaviruses, which cleaves peptide b
- PicornavirusFamily of viruses
- Pigeon intelligencePigeons have featured in numerous experiments in comparative psychology, including experim
- PilusProteinaceous hair-like appendage on the surface of bacteria
- Pineal glandEndocrine gland in the brain of most vertebrates
- PinegaPinega (Пинега) is a rural locality (a settlement), formerly a town, in Pinezhsky District
- PinnulariaGenus of single-celled organisms
- Pinworm (parasite)Species of worm
- Pipecolic acidPipecolic acid (piperidine-2-carboxylic acid) is an organic compound with the formula HNC5
- Pit additivePit additives is a commercially-produced material that aims to reduce fecal sludge build-u
- Pitcher plantCarnivorous plants resembling pitchers
- PithPlant tissue
- Pituitary glandEndocrine gland of the brain
- Placental microbiomeThe placental microbiome is the nonpathogenic, commensal bacteria claimed to be present in
- PlacentationFormation and structure of the placenta
- PlacidozoaGroup of non-photosynthetic organisms
- Plant developmentProcess by which structures originate and mature as a plant grows
- Plant embryonic developmentProcess after the fertilization of an ovule to produce a fully developed plant embryo
- Plant evolutionSubset of evolutionary phenomena that concern plants
- Plant genome assemblyGenomic plant sequence
- Plant Life RecordsRecord label
- Plant nutritionStudy of the chemical elements and compounds necessary for normal plant life
- Plant pathologyScientific study of plant diseases
- Plant physiologySubdiscipline of botany
- Plant senescencePlant senescence is the process of aging in plants. Plants have both stress-induced and ag
- Plant-induced systemic resistanceInduced systemic resistance (ISR) is a resistance mechanism in plants that is activated by
- Plants in Meitei cultureMany plants (Meitei: pāmbī) play a significant role in Meitei cuisine, festivals, folklore
- Plaque reduction neutralization testLaboratory test for virus-neutralizing antibodies
- Plasmid partition systemMechanism for plasmid inheritance in bacterial cell division
- Plasmid preparationBiological method of DNA extraction and purification
- PlasmodesmaChannel in cell walls of plants and some algae
- PlasmodiidaeFamily of apicomplexan protists
- PlasmodiophoreGroup of fungi-like protists
- Plasmodium cynomolgiPlasmodium cynomolgi is an apicomplexan parasite that infects mosquitoes and Asian Old Wor
- Plasmodium falciparumProtozoan species of malaria parasite
- Plasmodium knowlesiSpecies of single-celled organism
- Plasmodium malariaeSpecies of single-celled organism
- Plasmodium ovaleSpecies of single-celled organism
- Plasmodium vivaxSpecies of single-celled organism
- Plastid DNADNA located in cellular organelles called chloroplasts
- PlastinationTechnique used in anatomy to preserve bodies or body parts
- Plate count agarNon-selective microbiological growth medium
- PlateletComponent of blood aiding in coagulation
- Platelet plugAggregation of platelets formed during early stage of coagulation
- PleiotropyInfluence of a single gene on multiple phenotypic traits
- Pleomorphism (microbiology)Ability of some bacteria to alter their shape or size
- PleuromutilinPleuromutilin and its derivatives are antibacterial drugs that inhibit protein synthesis i
- Plica semilunaris of conjunctivaThe plica semilunaris is a small fold of bulbar conjunctiva on the medial canthus of the e
- PloidyNumber of sets of chromosomes of a cell
- PLOS PathogensAcademic journal
- Pneumonia (non-human)Pneumonia is an irritation of the lungs caused by different sources. It is characterized b
- Pneumonic plagueSevere lung infection
- PoikilothermOrganism with considerable internal temperature variation
- Point mutationReplacement, insertion, or deletion of a single DNA or RNA nucleotide
- Poison exonBiological phenomenon
- Polar bodyByproduct of oogenesis
- Polarized membraneLipid membrane with a charge differential
- PoliovirusEnterovirus
- Pollia condensataPollia condensata, sometimes called the marble berry, is a perennial herbaceous plant with
- PoloxamerPoloxamers are nonionic triblock copolymers composed of a central hydrophobic chain of pol
- PolyadenylationPolyadenylation is the addition of a poly(A) tail to an RNA transcript, typically a messen
- PolycephalyCondition of having more than one head
- Polycomb-group proteinsFamily of proteins that play a role in chromatin remodeling
- PolydioxanonePolydioxanone (PDO, PDS) or poly-p-dioxanone is a colorless, crystalline, biodegradable sy
- PolydnaviriformidaeFamily of viruses
- PolyembryonyDevelopment of more than one embryo from a single egg
- Polygenic scoreNumerical score aimed at predicting a trait based on variation in multiple genetic loci
- PolyglycolidePolyglycolide or poly(glycolic acid) (PGA), also spelled as polyglycolic acid, is a biodeg
- PolyhydroxyalkanoatesPolyester family
- PolymeraseIn biochemistry, a polymerase is an enzyme (EC 2.7.7.6/7/19/48/49) that synthesizes long c
- Polymerase chain reaction optimizationMethods to reduce failure and increase the reliability of PCR
- Polymorphism (biology)Species having two or more distinct forms
- Polymorphism in LepidopteraMany types of polymorphism can be seen in the insect order Lepidoptera. Polymorphism is th
- PolyomaviridaeFamily of viruses
- PolyphenismType of polymorphism where different forms of an animal arise from a single genotype
- PolyploidyCondition where cells have more than two sets of chromosomes
- Polypyrimidine tract-binding proteinPolypyrimidine tract-binding protein, also known as PTB or hnRNP I, is an RNA-binding prot
- PolysaccharideLong carbohydrate polymers such as starch, glycogen, cellulose, and chitin
- PolysomeRibosomes bound to an mRNA molecule
- Polystichum setiferumPolystichum setiferum, the soft shield fern, is an evergreen or semi-evergreen fern native
- Polytene chromosomeLarge chromosome with thousands of DNA strands
- PolytomyMultifurcated node of a phylogenetic tree
- Ponceau 2RPonceau 2R, Xylidine ponceau, Ponceau G, Red R, Acid Red 26, Food Red 5, or C.I. 16150 is
- PonsPart of the brainstem in humans and other bipeds
- POPCPOPC (1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine) is a phosphatidylcholine. It is a
- Population biologyThe term population biology has been used with different meanings.
- Population bottleneckSharp reduction in the size of a population
- Population ecologyField of ecology
- Population geneticsSubfield of genetics
- Population growthIncrease in the number of individuals in a population
- Population structure (genetics)Stratification of a genetic population based on allele frequencies
- PoribacteriaPoribacteria are a candidate phylum of bacteria originally discovered in the microbiome of
- PorphyromonadaceaePorphyromonadaceae is a family of Gram-negative bacteria described by Noel R. Krieg in 201
- PorphyromonasGenus of bacteria
- Porphyromonas gingivalisSpecies of bacterium
- Positive ChristianityNazi movement which fused racial purity and Christianity
- Positive feedbackLoop that increases an initial effect
- Positive youth developmentType of youth development program
- Post-harvest losses (vegetables)Post-harvest losses of vegetables and fruits occur at all points in the value chain from p
- Post-transcriptional modificationRNA processing within a biological cell
- Post-transcriptional regulationControl of gene expression at the RNA level, between transcription and translation
- Post-translational modificationChemical changes in proteins following their translation from mRNA
- Post-transplant lymphoproliferative disorderPost-transplant lymphoproliferative disorder (PTLD) is the name given to a B cell prolifer
- Posterior scrotal veinsThe posterior scrotal veins are veins of the scrotum. They accompany the posterior scrotal
- Postterm pregnancyMedical condition
- Potassium spatial bufferingPotassium spatial buffering is a mechanism for the regulation of extracellular potassium c
- Potato virus YPotato virus Y (PVY) is a plant pathogenic virus of the family Potyviridae, and one of the
- PotexvirusGenus of viruses
- PotyviridaeFamily of viruses
- PotyvirusGenus of positive-strand RNA viruses in the family Potyviridae
- Poubi LaiPoubi Lai was an ancient dragon python, who dwelled in the Loktak Lake of Manipur, in Meit
- Pouch (marsupial)Anatomical structure of marsupials
- PoxviridaeFamily of viruses
- Prader–Willi syndromeGenetic disorder involving an imprinted genomic region
- PRDX3Thioredoxin-dependent peroxide reductase, mitochondrial is an enzyme that in humans is enc
- PRDX4Peroxiredoxin-4 is a protein that in humans is encoded by the PRDX4 gene. It is a member o
- PRDX5Peroxiredoxin-5 (PRDX5), mitochondrial is a protein that in humans is encoded by the PRDX5
- Pre-replication complexA pre-replication complex (pre-RC) is a protein complex that forms at the origin of replic
- PreadolescenceStage of human development
- Predictive genomicsPredictive genomics is at the intersection of multiple disciplines: predictive medicine, p
- Predictive medicinePredictive medicine is a field of medicine that entails predicting the probability of dise
- Predrag RadivojacPredrag Radivojac is a Serbian computational biologist and professor of computer science a
- PreformationismIn the history of biology, preformationism (or preformism) is a formerly popular theory th
- Pregnancy (mammals)Period of reproduction
- Pregnancy in fishPregnancy has been traditionally defined as the period of time a creature's young are incu
- PregnanePregnane, also known as 17β-ethylandrostane or as 10β,13β-dimethyl-17β-ethylgonane, is a C
- Preimplantation genetic diagnosisGenetic profiling of embryos prior to implantation
- Premenstrual syndromeEmotional and physical symptoms that occur one to two weeks before a menstrual period
- Prenatal and perinatal psychologyPsychology of the effects from pre-birth, during birth, and post-birth and events
- Pressure cookerDevice for preparing food
- Preterm birthBirth at less than a specified gestational age
- Prevalence of rabiesEpidemiological topic
- PrevotellaGenus of bacteria
- Prevotella melaninogenicaPrevotella melaninogenica is a species of bacterium in the normal microbiota of the upper
- Pribnow boxDNA sequence required in bacterial promoters for transcription
- PriestiaGenus of bacteria
- Priluzsky DistrictPriluzsky District (Russian: Прилузский райо́н; Komi: Луздор район, Luzdor rajon) is an ad
- Primary effusion lymphomaPrimary effusion lymphoma (PEL) is classified as a diffuse large B cell lymphoma. It is a
- Primary nutritional groupsGroup of organisms
- Primary productionSynthesis of organic compounds from carbon dioxide by biological organisms
- Primary successionGradual growth and change of an ecosystem on new substrate
- Primary transcriptRNA produced by transcription
- Primary veinLeaf anatomy
- PrimaseClass of enzymes
- Prime editingGene editing technique
- Primer (molecular biology)Short strand of RNA or DNA that serves as a starting point for DNA synthesis
- Primitive (phylogenetics)Feature inherited from common ancestor
- Primordial germ cell migrationPrimordial germ cell (PGC) migration is the process of distribution of primordial germ cel
- Primordial soupTheoretical conditions under which life on the Earth might have begun
- PRKAA25'-AMP-activated protein kinase catalytic subunit alpha-2 is an enzyme that in humans is e
- ProbioticMicroorganism consumed in food
- Proboscidea (plant)Proboscidea is a genus of flowering plant in the family Martyniaceae, some of whose specie
- ProboscisElongated mouth part
- Processing fluencyEase with which the brain processes information
- ProchlorococcusGenus of bacteria
- Procollagen-proline dioxygenaseEnzyme
- ProgesteroneSex hormone
- ProgestogenSteroid hormone that activates the progesterone receptor
- ProhormonePrecursor of a hormone
- Project JeffersonCovert program by the U.S. Defense Intelligence Agency
- Prokaryotic cytoskeletonStructural filaments in prokaryotes
- Prokaryotic large ribosomal subunitProtein critical for bacterial RNA translation
- ProlineChemical compound
- PromethearchaeaceaeFamily of Asgard archaea
- PromethearchaeumGenus of archaea
- Promoter (genetics)Region of DNA encouraging transcription
- Promoter activityPromoter activity is a term that encompasses several meanings around the process of gene e
- Proneural genesProneural genes encode transcription factors of the basic helix-loop-helix (bHLH) class wh
- PronucleusNucleus of a sperm or an egg cell during fertilization
- Proofreading (biology)Correction of DNA replication errors
- PropionibacteriumGenus of bacteria
- Propionibacterium freudenreichiiSpecies of bacterium
- ProprioceptionSense of position of one's own body parts
- PROSITEDatabase of protein domains, families and functional sites
- Prostaglandin D2 synthaseProstaglandin-H2 D-isomerase (PTGDS) is an enzyme that in humans is encoded by the PTGDS g
- ProstateGland of the male reproductive system
- Prostatic venous plexusThe prostatic veins form a well-marked prostatic plexus which lies partly in the fascial s
- ProteaseEnzyme that cleaves other proteins into smaller peptides
- ProteasomeProtein complexes which degrade ubiquitin-tagged proteins by proteolysis
- Protein biosynthesisAssembly of proteins inside biological cells
- Protein complexType of stable macromolecular complex
- Protein Data BankInternational open access database of large biological molecules
- Protein Digestibility Corrected Amino Acid ScoreProtein digestibility-corrected amino acid score (PDCAAS) is a method of evaluating the qu
- Protein dimerMacromolecular complex formed by two, usually non-covalently bound, macromolecules
- Protein domainSelf-stable region of a protein's chain that folds independently from the rest
- Protein familyGroup of evolutionarily-related proteins
- Protein filamentLong chain of protein monomers
- Protein foldingChange of a linear protein chain to a 3D structure
- Protein kinase AIn cell biology, protein kinase A (PKA) is a family of serine-threonine kinase whose activ
- Protein microarrayDevice for tracking proteins
- Protein phosphorylationProcess of introducing a phosphate group on to a protein
- Protein primary structureLinear sequence of amino acids in a peptide or protein
- Protein qualityProtein ranking for human nutrition
- Protein quaternary structureProtein quaternary structure is the fourth (and highest) classification level of protein s
- Protein secondary structureGeneral three-dimensional form of local segments of proteins
- Protein sequencingProtein sequencing is the practical process of determining the amino acid sequence of all
- Protein splicingProtein splicing is an intramolecular reaction of a particular protein in which an interna
- Protein structureThree-dimensional arrangement of atoms in an amino acid-chain molecule
- Protein Structure InitiativeThe Protein Structure Initiative (PSI) was a USA based project that aimed at accelerating
- Protein structure predictionType of biological prediction
- Protein subunitStructural unit of a protein complex
- Protein superfamilyGrouping of proteins
- Protein tandem repeatsAn array of protein tandem repeats is defined as several (at least two) adjacent copies ha
- Protein targetingBiological mechanism for routing proteins
- Protein tertiary structureThree-dimensional shape of a protein
- Proteinase KBroad-spectrum serine protease
- Proteinogenic amino acidAmino acid that is incorporated biosynthetically into proteins during translation
- ProteoglycanClass of compounds
- ProteomeSet of proteins that can be expressed by a genome, cell, tissue, or organism
- ProteomicsLarge-scale study of proteins
- ProterospongiaGenus of colony-forming single-celled organisms
- Proteus (bacterium)Genus of bacteria
- Proteus mirabilisSpecies of bacterium
- Proteus penneriProteus penneri is a Gram-negative, facultatively anaerobic, rod-shaped bacterium. It is a
- Proteus vulgarisSpecies of bacterium
- Protist locomotionProtists are the eukaryotes that cannot be classified as plants, fungi or animals. They ar
- ProtistologyScientific discipline devoted to the study of protists
- Proto-mitochondrionHypothetical endosymbiont ancestor of all mitochondria
- Proto-oncogene tyrosine-protein kinase SrcMammalian protein found in humans
- Protocarnivorous plantCarnivorous plant that can not digest prey
- ProtocellLipid globule proposed as a precursor of living cells
- Protochlorophyllide reductaseIn enzymology, protochlorophyllide reductases (POR) are enzymes that catalyze the conversi
- ProtococcidioridaProtococcidiorida is an order within the subclass Conoidasida of the phylum Apicomplexia.
- ProtoplasmAlternative term for cytoplasm or cytoplasm and nucleoplasm
- ProtoplastCell stripped of cell-wall
- Protospacer adjacent motifA protospacer adjacent motif (PAM) is a 2–6-base pair DNA sequence immediately following t
- ProtosteloidArtificial group of slime moulds
- ProvoraGroup of predatory microbes
- Prymnesium parvumSpecies of single-celled organism
- PsammosereSequence of plant succession
- PseudemysPseudemys is a genus of large, herbivorous, freshwater turtles of the eastern United State
- Pseudideonella sakaiensisPET-degrading species of bacterium
- Pseudoautosomal regionRegion of sexual chromosomes exhibiting an autosomal inheritance pattern
- PseudocopulationPseudocopulation is a behavior similar to copulation that serves a reproductive function f
- Pseudodeficiency allelesA pseudodeficiency allele or pseudodeficiency mutation is a mutation that alters the prote
- PseudogeneFunctionless relative of a gene
- Pseudoglutamicibacter cumminsiiSpecies of bacterium
- PseudomonadaceaeFamily of gram-negative bacteria
- PseudomonadalesThe Pseudomonadales are an order of Pseudomonadota. A few members are pathogens, such as s
- PseudomonadatiKingdom of bacteria
- PseudomonasGenus of Gram-negative bacteria
- Pseudomonas fluorescensSpecies of bacterium
- Pseudomonas migulaePseudomonas migulae is a fluorescent, Gram-negative, rod-shaped bacterium isolated from na
- Pseudomonas putidaSpecies of bacterium
- PseudonocardiaceaeThe Pseudonocardiaceae are a family of bacteria in the order Actinomycetales and the only
- Pseudoperonospora cubensisSpecies of single-celled organism
- Pseudopod (podcast)Pseudopod is a podcast launched on 11 August 2006 which presents horror genre short storie
- PseudopodiaFalse leg found on slime molds, archaea, protozoans, leukocytes and certain bacteria
- Psychiatric geneticsResearch field focused on role of genetics in development of mental disorders
- PsychoplastogenDrugs that promote rapid and sustained neuroplasticity
- PsychrophileOrganism capable of growing and reproducing in the cold
- PTEN (gene)Phosphatase and tensin homolog (PTEN) is a phosphatase in humans and is encoded by the PTE
- PTS Mannose-Fructose-Sorbose FamilyThe PTS Mannose-Fructose-Sorbose (Man) Family (TC# 4.A.6) is a group of multicomponent PTS
- Pubic hairBody hair in the genital region
- Public health genomicsField of study
- PubMed CentralRepository of freely accessible biomedical journal articles
- Pudendal arteriesThe pudendal arteries are a group of arteries which supply many of the muscles and organs
- Pulmonary alveolusHollow cavity found in the lungs
- Pulmonary branches of vagus nerveThe pulmonary branches of the vagus nerve can be divided into two groups: anterior and pos
- Punctuated equilibriumTheory in evolutionary biology
- PungencyHot or spicy flavor
- Punnett squareTabular summary of genetic combinations
- PupilPart of an eye
- Purine riboswitchRNA family
- Purkinje effectTendency for sight to shift toward blue colors at low light levels
- Purple bacteriaGroup of phototrophic bacteria
- Purple Earth hypothesisAstrobiological hypothesis regarding early photosynthetic organisms
- Purple sulfur bacteriaGroup of bacteria
- Pursuit predationHunting strategy by some predators
- Pusztai affairControversy in genetic engineering
- Putative geneSegment of DNA that is believed to be a gene
- Putrefying bacteriaBacteria involved in decay of living matter
- Pyrin domainA pyrin domain (PYD, also known as PAAD/DAPIN) is a protein domain and a subclass of prote
- Pyrococcus furiosusSpecies of archaeon
- Pyrocystis fusiformisSpecies of single-celled organism
- PyrodictiaceaeFamily of archaea
- Pyrolobus fumariiSpecies of prokaryote
- PyrosequencingMethod of DNA sequencing
- PyrrolysineChemical compound
- Pyruvate dehydrogenasePyruvate dehydrogenase is an enzyme that catalyzes the reaction of pyruvate and a lipoamid
- Pyruvate kinaseClass of enzymes
