Population Differentiation of Southern Indian Male Lineages Correlates with Agricultural Expansions Predating the Caste System
Figure 1
Tamil Nadu map showing the sampling location of the 12 tribal (squares) and 19 non-tribal (circles) populations.
The majority of tribal populations are located in the mountains of the Western Ghats. The color codes are: Red – Hill Tribe Foragers (HTF); Turquoise – Hill Tribe Cremating (HTC); Green – Hill Tribe Kannada (HTK); Grey – Schedule Castes (SC); Pink – Dry-Land Farmers (DLF); Deep Blue – Artisan and Warriors (AW) and Yellow – Brahmin related (BRH). Population abbreviations are as shown in Table 1.