that the Indian populations are characterized by two major ancestry components. One of them is spread at comparable frequency and haplotype diversity in populations of South and West Asia and the Caucasus. The second component is more restricted to South Asia and accounts for more than 50% of the ancestry in Indian populations. Haplotype diversity associated with these South Asian ancestry components is significantly higher than that of the components dominating the West Eurasian ancestry palette. Segurel et al. (2020) notes the -13910*T Lactase persistence mutation, found in present-day South Asia, first appeared approximately 3,960 BCE, in Ukraine, and spread between 2,000 and 1,500 BCE throughout Eurasia. Earlier Tandon et al. (1981) had studied the distribution of lactase toleration in North and South Indians. Romero et al.(2011) later plotting a decreasing North West to South East Indian cline for the mutations frequency . Additional components discern three major ancestry components, which they call "Southwest Asian", "Southeast Asian" and "Northeast Asian". The Southwest Asian component seems to be a native Indian component, while the Southeast Asian component is related to East Asian populations. Brahmin populations "contained 11.4 and 10.6% of Northern Eurasian and Mediterranean components, thereby suggesting a shared ancestry with the Europeans". They note that this fits with earlier studies which "suggested similar shared ancestries with Europeans and Mediterraneans". They further note that They conclude that, while there may have been an ancient settlement in the subcontinent, "male-dominated genetic elements shap[ed] the Indian gene pool", and that these elements "have earlier been correlated to various languages", and further note "the fluidity of female gene pools when in a patriarchal and patrilocal society, such as that of India". extend the study of by postulating two other populations in addition to the ANI and ASI: "Ancestral Austro-Asiatic" (AAA) and "Ancestral Tibeto-Burman" (ATB), corresponding to the Austroasiatic and Tibeto-Burman language speakers. According to them, ancestral populations seem to have occupied geographically separated habitats. The ASI and the AAA were early settlers, who possibly arrived via the southern wave out of Africa. The ANI are related to Central South Asians and entered India through the northwest, while the ATB are related to East Asians and entered India through northeast corridors. They further note that Male-mediated migration Reich et al. (2009), citing , indicate that there has been a low influx of female genetic material since 50,000 years ago, but a "male gene flow from