samaalenoble wrote:That's a terrible and devious explanation and example, of a population bottleneck event. A 14 year war don't cause a bottleneck event moron. The indigenous Somali populations that carry haplogroup T were simply drastically reduced.
At least you got the current SNP methodology problem correct.
Tell your buddy there not to damage any UNESCO world heritage sites in his lifetime. Eid Mubarak.
Haplogroup T (formerly known as haplogroup K2-M70) is today mainly found among ethnic Somalis and other Afro-Asiatic-speaking populations in Northeast Africa. I take it, then, that you subscribe to
Luis et al. (2004)'s theory that the haplogroup T carriers on the continent were originally more widespread, but were later overwhelmed by groups carrying other haplogroups?
”The current patchy distribution of K2-M70 in Africa may be a remnant of a more widespread occupation. Subsequent demic events introducing chromosomes carrying the E3b-M35, E3a-M2, G-M201, and J-12f2 haplogroups may have overwhelmed the K2-M70 representatives in some areas. Like the R1*-M173 males, the M70 individuals could represent the relics of an early back migration to Africa from Asia, since these chromosomes are not associated with the G-M201, J-12f2, and R1-M173 derivatives, lineages that represent more-recent Eurasian genetic contributions (Semino et al. 2000; Underhill et al. 2001b). The K2-M70 expansion estimates in Egypt (17.5–13.7 ky; see table 3) are consistent with an early African diaspora. From the present-day African distribution of K2-M70, it is difficult to determine which of the two Africa/Asia migratory passages, if any, prevailed in its southward journey. However, the BATWING expansion estimates of both the Egyptian and Turkish K2-M70 lineages (13.7 ky and 9.0 ky, respectively) are much older than that of Oman (1.6 ky), which suggests that the Levantine corridor may have been used more extensively in the African dissemination of this lineage as well.”
It is certainly an interesting argument. I actually don't rule it out entirely.
Like E1b1b, haplogroup T is also found in the Southern Egypt/northern Sudan area. Its geographical distribution appears to parallel that of the mtDNA haplogroup M1, so the two may have been companion lineages.