Mendel's Pea Crosses

Also called

mendel · pea plant experiments · monohybrid cross · dihybrid cross · punnett square · dominant trait · recessive trait · tall and dwarf · round and wrinkled seeds · yellow and green seeds · 3:1 ratio · 9:3:3:1 ratio · independent assortment · F1 generation · F2 generation · genotype and phenotype · मेंडल · वंशागति · प्रभावी और अप्रभावी लक्षण

Topics

• Mendel crossed pure tall (TT) and pure dwarf (tt) peas: every F1 plant was tall, so tall is dominant, dwarf recessive.
• When the F1 plants (Tt) self-pollinated, the F2 had tall and dwarf plants in the ratio 3 : 1: dwarf was only hidden.
• Each parent passes on one copy of each gene in its gametes; a Punnett square lists every way they can combine.
• In the F2, TT and Tt plants (3 of 4) are tall and tt plants (1 of 4) are dwarf.
• Crossing round yellow (RRYY) with wrinkled green (rryy) seeds gave all round yellow F1 seeds.
• The F2 of that dihybrid cross: round yellow, round green, wrinkled yellow and wrinkled green seeds in 9 : 3 : 3 : 1.
• Round green and wrinkled yellow are new combinations: seed shape and seed colour are inherited independently.
• A trait that shows is the phenotype; the pair of alleles behind it is the genotype.

About this model

A GLB file of about 371 KB, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Model, science and animation: Lably (built procedurally with three.js; no downloaded meshes). | CC BY 4.0. Original geometry and animation made for Lably.

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