Haplogroup BT

Haplogroup BT
Possible time of origin~150,000-145,000 BP
Possible place of originAfrica
AncestorA2-T
DescendantsB-M60, CT
Defining mutationsPage65.1/SRY1532.1/SRY10831.1, M42, M91, M94, M139, M299, P97, V21, V29, V31, V59, V64, V102, V187, V202, V216, V235

Haplogroup BT M91, also known as Haplogroup A1b2 (and formerly as A4, BR and BCDEF), is a Y-chromosome haplogroup. BT is a subclade of haplogroup A1b (P108) and a sibling of the haplogroup A1b1 (L419/PF712).

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