By chance, the researchers discovered a white man with a rare Yorkshire surname carrying a Y chromosome haplogroup that had previously been found only in West African men. And even there, it is ...

Not all Y chromosomes are the same. There are variants within the male gender called “Y-haplogroups”, which are usually associated with specific geographic regions and tend to indicate the ...

In 2002, the Y Chromosome Consortium (YCC) constructed a tree of 153 haplogroups based upon 243 unique genetic markers. In this report, researchers led by Dr. Michael Hammer of the University of ...