They certainly could. But they wouldn't group Khoisans and Bantus together as "Black" compared to the Irish person being "White". Traditional racial categorie

They certainly could. But they wouldn't group Khoisans and Bantus together as "Black" compared to the Irish person being "White". Traditional racial categories fail to carve reality at the joints and modern geneticists will always use terms like "ancestry" rather than "race" because the later just has too much baggage to deal with.