C O N T E N T SSee AlsoDescriptionIn human genetics, Haplogroup A (M91) is a Y-chromosome haplogroup. Haplogroup A is localized to Africa and represents the oldest and most diverse of the human Y-chromosome haplogroups. It is believed to be the haplogroup corresponding to Y-chromosomal Adam. It is common among the Khoisan people, including the Bushmen and the Hadza of Tanzania. DiscussionLinksAttribution
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