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Sherpa people

Nepalese ethnic group

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Younger Generations of Sherpa in Traditional Costumes (West Bengal Sherpa Cultural Board)
TseRigs · CC BY-SA 4.0

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Through Nepal, India and China

The Sherpa language is part of the southern branch of the Tibeto-Burman languages, mixed with eastern (Khams Tibetan) and central Tibetan dialects. This language is separate from Lhasa Tibetan, and is unintelligible to Lhasa speakers.

The Sherpa people are associated with mountaineering, and many work as mountaineering and climbing guides in the Himalayas region. They have been instrumental in the first ascents of a number of Himalayan peaks, most notably in 1953 when Sherpa mountaineer Tenzing Norgay became one of the first two people to reach the summit of Mount Everest.

History

Sherpas are descended from nomads who settled in the Himalayas near Mount Everest: the Khumbu and Solu regions of Mahālangūr Himāl. This area is along the border between Nepal and China. It is in the Solukhumbu District of Koshi, the easternmost province of Nepal and south of China's Tibet Autonomous Region.

Oral Sherpa history lists four clans who migrated from Kham to Solukhumbu: Minyakpa, Thimmi, Lamas Sherwa, and Chawa. These clans evolved into more than 20 groups. During the 13th and 14th centuries, conflict with Mahayana Buddhism may have contributed to Sherpa migration from Tibet to Nepal's Khumbu regions. Before crossing into the Himalayas, Sherpa migrants traveled through Ü and Tsang.

By the 15th century, the Khumbu Sherpas attained autonomy in newly-formed Nepal. As tensions with China increased in the 1960s, Nepali government influence on the Sherpas grew. Khumbu became a national park in 1976, and tourism became a major economic sector.

The word sherpa derives from the Tibetan words shar (ཤར, 'east') and pa (པ, 'people'). The reason for this derivation is unclear, but a common explanation notes that the Sherpas originated in eastern Tibet. The community is based in the Nepalese highlands, however, which is south of Tibet.

Genetics

Genetic studies indicate that much of the Sherpa population has allele frequencies which are often found in other Tibeto-Burman regions. In tested genes, the strongest affinity was for Tibetan-population-sample studies in the Tibet Autonomous Region. Genetically, the Sherpa cluster is closest to the sample Tibetan and Han populations. According to Wang et al. (2021), Dingjie Sherpa demonstrated a close genetic relationship with East Asian reference populations (especially Sino-Tibetan-speaking populations and Tokyo Japanese). The Sherpa also exhibited an affinity for several Himalayan tribes; the strongest was for the Rai people, followed by the Magars and Tamang.

A 2010 study identified more than 30 genetic factors that make Tibetan bodies well-suited for high altitudes, including EPAS1: the "super-athlete gene" which regulates the body's production of hemoglobin, allowing greater efficiency in the use of oxygen. A 2016 study of Sherpas in Tibet suggested that a small portion of Sherpa and Tibetan allele frequencies originated from separate ancient populations which were estimated to have been distributed for 7,000 to 11,000 years.

Haplogroup distribution

A 2014 study found that substantial genetic components from the Indian subcontinent were found in Tibetan Sherpas. The western Y chromosomal haplogroups R1a1a-M17, J-M304, and F*-M89 make up almost 17 percent of the paternal gene pool in tested individuals. on the maternal side, M5c2, M21d, and U from the west are found in up to eight percent of people in a given Sherpa population. A 2015 study did not support the results of the previous year's study; the 2015 study concluded that genetic sharing from the Indian subcontinent was limited, and a 2017 study reached the same conclusion.

In a 2015 study of 582 Sherpas (277 males) from China and Nepal, haplogroup D-M174 was found most frequently, followed by Haplogroup O-M175, Haplogroup F-M89 and Haplogroup K-M9. The Y-chromosome haplogroup distribution for Sherpas follows a pattern similar to that of Tibetans.

Sherpa mtDNA distribution shows greater diversity; Haplogroup A was found most frequently, followed by Haplogroup M9a, Haplogroup C4a, Haplogroup M70, and Haplogroup D. These haplogroups are also found in some Tibetan populations. Two common mtDNA sub-haplogroups unique to Sherpas populations were identified: Haplogroup A15c1 and Haplogroup C4a3b1.

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