It is possible that neither of the primary branches of R-M207, namely R1 (R-M173) and R2 (R-M479) still exist in their basal, original forms, i.e. (While a living example of R-M207(xM17,M124) was reported in 2012, it was not tested for the SNP M478 the male concerned – among a sample of 158 ethnic Tajik males from Badakshan, Afghanistan – may therefore belong to R2.)
Only one confirmed example of basal R* has been found, in 24,000 year old remains, known as MA1, found at Mal'ta–Buret' culture near Lake Baikal in Siberia. The SNP M207, which defines Haplogroup R, is believed to have arisen during the Upper Paleolithic era, about 27,000 years ago. Haplogroup P1 (P-M45), the immediate ancestor of Haplogroup R, likely emerged in Southeast Asia. Haplogroups R and Q emerged and diversified in Central Asia and spread across Eurasia in several expansion waves. This was followed by the relatively rapid westward expansion of P1 – the immediate ancestor of both Haplogroups Q and R. , followed by K2b1 and P (also known as K2b2) likely occurred in Southeast Asia. of K-M526", also known as K2, into K2a and K2b (2014) and other researchers state that a "rapid diversification. Some authorities have also suggested, more controversially, that R-M207 has long been present among Native Americans in North America – a theory that has not yet been widely accepted. Others have long been present, at lower levels, in parts of West Asia and Africa. Some descendant subclades have been found since pre-history in Europe, Central Asia and South Asia. It is both numerous and widespread amongst modern populations. Haplogroup R, or R-M207, is a Y-chromosome DNA haplogroup. P1 (P-M45), the only primary clade of P* (P-P295) For the mitochondrial DNA haplogroup, see Haplogroup R (mtDNA).
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