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Matrilineality is the tracing of kinship through the female line. It may also correlate with a social system in which each person is identified with their matriline, their mother's lineage, and which can involve the inheritance of property and titles.
A man's patrilineal ancestry, or male-line ancestry, can be traced using the DNA on his Y-chromosome (Y-DNA), because the Y-chromosome is transmitted from a father to son nearly unchanged. [31] A man's test results are compared to another man's results to determine the time frame in which the two individuals shared a most recent common ancestor ...
The term monophyly, or monophyletic, derives from the two Ancient Greek words μόνος (mónos), meaning "alone, only, unique", and φῦλον (phûlon), meaning "genus, species", [4] [5] and refers to the fact that a monophyletic group includes organisms (e.g., genera, species) consisting of all the descendants of a unique common ancestor.
Modern South Asians are descendants of a combination of Western Eurasian ancestries (notably "Iran Neolithic Farmers" and "Western Steppe Herder" components) with an indigenous South Asian component (termed Ancient Ancestral South Indians, short "AASI") closest to the non–West Eurasian part extracted from South Asian samples; distantly related to the Andamanese peoples, as well as to East ...
Such groups are said to be monophyletic. There are slightly different methods of specifying the ancestor, which are discussed below. Once the ancestor is specified, the meaning of the name is fixed: the ancestor and all organisms which are its descendants are included in the taxon named.
GeneTree later returned to genetic testing in conjunction with its Sorenson parent company until it was acquired by Ancestry.com in 2012. [12] In 2007, 23andMe was the first company to offer saliva-based direct-to-consumer testing, [13] and the first to use autosomal DNA for ancestry testing.
The Tamil language is one of the longest-surviving classical languages, with over two thousand years of written history, dating back to the Sangam period (between 300 BCE and 300 CE). Tamils constitute about 5.7% of the Indian population and form the majority in the South Indian state of Tamil Nadu and the union territory of Puducherry.
The following is a chronological overview of the history of the Tamil people, who trace their ancestry to the Indian state of Tamil Nadu, the Indian union territory of Puducherry, the Northern and Eastern Provinces of Sri Lanka and the Puttalam District of Sri Lanka. [1] [2]