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Post by djoser-xyyman on Jan 18, 2020 10:05:25 GMT -5
Placeholder. I haven't read and dissected the paper as yet. ___<< Research paper The Y-chromosome of the Soliga, an ancient forest-dwelling tribe of South India Author links open overlay panelDiane J.RowoldbgRene J.Herreraa Show more doi.org/10.1016/j.gene.2019.100026Get rights and content Under a Creative Commons
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Post by djoser-xyyman on Jan 18, 2020 10:09:11 GMT -5
Graphical abstract Contour frequency map of haplogroup R. 1. The Soligas are considered one of India's earliest inhabitants.
2. We present Y chromosomal characteristics shared between the Soligas population and other Indian tribes.
3. The three most frequent haplogroups detected in the Soligas population are F*, H1 and J2. F*.
4. F* has a significant frequency bias in favor of Indian tribes versus castes.
5. Y-STR haplotypes are shared between sub-Saharan African populations and F* males of the Soliga, Irula and Kurumba.
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Post by zarahan on Jan 18, 2020 22:30:32 GMT -5
They have a good summary on the background of the Indian-African links in their approach.
1) African individuals of the CT haplogroup harboring the central profile of the Indian/African Y-STR network (Fig. S7) crossed over into Asia around 70 Kya.
2) Approximately 65 Kya, at some point along the southern coastal route, the CF haplogroup arose on this Y-STR background and its members migrated eastward into the southern tip of the Indian sub-continent.
3) F may have originated from CF on this Y-STR background somewhere between southern and western India.
4) In turn, the GHIJK macrohaplogroup emerged from F. Population growth and geographical dispersion may have caused a rapid expansion of Y-STR profiles. If the original Y-STR haplotype was carried over into the GHIJK pool, it was soon swamped by descendant haplotypes via rapid genetic diversification.
5) In contrast, the basal F*, associated with these South Asian tribal communities, experienced reduced rates of population growth and thus, a substantially reduced Y-STR diversity. In this setting, it is conceivable that the original Y-STR haplotype was retained at polymorphic frequencies.
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