In 2013, discovery of a previously unknown
Y-chromosomal haplogroup, dubbed
haplogroup A00 (AF6) was announced. First found in the Y-chromosome of an
African American male submitted for commercial genealogical analysis, the haplogroup was identified in eleven Y chromosomes of Mbo males (out of a sample of 174, corresponding to 6.3%). The discovery of this division of "haplogroup A00" ancestral from
A0-FGC27410 pushes back the estimation of the age of
Y-chromosomal Adam, the most recent ancestor
through direct paternal lines of all humans currently alive to ~250,000 years ago. ==References==