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.

[5] According to geneticist Spencer Wells, haplogroup K originated in the Middle East or Central Asia.

Geneticist Spencer Wells suggests that haplogroup K likely originated in the Middle East or Central Asia, perhaps in the region of Iran or Pakistan.

[8] Haplogroup P1 may have emerged in Southeast Asia, however according to Karafet, et al. this hypothesis is "parsimonious" and it is just as likely that it originated elsewhere in Eurasia.

[7] The SNP M207, which defines Haplogroup R, is believed to have arisen during the Upper Paleolithic era, about 27,000 years ago.

While some indigenous peoples of The Americas and Australasia also feature high levels of R-M207, it is unclear whether these are deep-rooted, or an effect of European colonisation during the early modern era.

One rare subclade may occur only among Ashkenazi Jews, possibly as a result of a founder effect.