Just to be clear my point is not spefically about haplogroup t. But the assumption that migration from the Levant into Africa during the Neolithic as some catch all explanation for how haplogroups are distribution.What's your explanation for the fact that j which makes up like 40% of the paternal lineages in the middle east and has been in the middle east the neolithic c is baiscally absent in any appreciable amounts outisde the 2 pouplations of arab Sudanese and habesha ?