Haplogroup B (Y-DNA) was the ancestral haplogroup of modern Pygmies.
Haplogroup B is localized to sub-Saharan Africa, especially to tropical forests of West-Central Africa. After Y-haplogroup A, it is the second oldest and one of the most diverse human Y-haplogroups. It was the ancestral haplogroup of modern Pygmies like e.g. the Baka and Mbuti, but also Hadzabe from Tanzania, who are often mistakenly considered as a remnant of Khoisan people in East Africa.