Friday, December 29, 2017

Laz Autosomal DNA

I’d like to begin my series of articles on autosomal DNA with the Laz people. This article will be based on the MDLP K16 calculator. I will publish the statistics I made based on 16 Laz samples and then share the details of the mentioned components.



Amerindian - a component, which is modal (i.e has a peak) in various native American groups of North and South America, as well as in ancient DNA of Native Americans (Clovis, Kennewick man, etc).

Ancestor - an archaic component, detected in modern African Pygmy populations (such as Mbuties and Biaka) and Khoisan hunter-gatherers.

Steppe - a component which was sourced from ancient genome of European Bronze Age pastoralists: it roughly approximates levels of ancient North Eurasian hunter-gatherers' heritage, which was subsequently shown to have an influence in later eastern hunter-gatherers and to have spread into Europe via an incursion of Steppe herders beginning ∼4,500 years ago.

Indian - a component of ancestry harboured by populations of Indian subcontinent

Arctic - a component displayed in genomes of Eskimo Inuits from Greenland and shared with Siberian Chukchis/Koryaks.

Australian - a component of aboriginal ancestry assigned to Australian aborigens.

Caucasian - a major component of ancestry of modern inhabitants of Caucasus, Iran and northern Indian       : it was derived from genomes of mesolithic Caucasian Hunter-gatherers: a major ancestral component linked to CHG was carried west and east by migrating herders from the Eurasian Steppe.

EastAfrican - a very dilluted component being inherited specififically from ancient inhabitants of Ethiopia and African Horn

NorthEastEuropean - a fancy moniker for a dominant type of ancestry in North-Eastern Europe based on older type of ancestry (WHG, west European Hunter-Gatherer), today this type of ancestry peaks in the Baltic region and Scandinavia

NearEast - a component harboured and later carried by ancient populations of Near East, in our time it reaches the maximum among Bedoins and Saudi Arabians; the component seems to carry an excess of Eurasian Basal component relative to Neolithic component.

Neolithic - a component, modeled on genomes of first neolithic farmers of Anatolia (West Asia), these farmers from West Asia migrated to Europe during the Neolithic and carried this component with them.

NorthAfrican - a local component of ancestry found in North Africans: this local North African genetic component is very different from the one found in the populations in the south of the Sahara (Subsaharian component, see below).

Oceanic - a component of aboriginal ancestry assigned to aborigens of Melanesia and Papua-New-Guinea.

Siberian - a component, which is rougly ascribed to Central Siberian (found at highest frequency in Nganasan)

SouthEastAsian - a dominant component of South East Asians: being highest among the Dai, Cambodians, Lahu and Malay, this is the most common East Asian component among South Asians.

Subsaharian - a main component of ancestry seen in Yoruba, Mandenka and Luhya populations.

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