All human adult males descend in the paternal line from a single guy dubbed Y-chromosomal Adam, who lived probably concerning 200,000 and 300,000 many years ago. The haplogroup was identified when an African-American male analyzed STRs at FamilyTreeDNA and his outcomes have been located to be unconventional. The African-American motion to discover and detect with ancestral tribes has burgeoned since DNA tests became offered.