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 ...

20, 23, 26 The presence of R-P25 Y chromosomes has also been reported in population groups from the Sudan; 27 however, as no internal markers were typed, the sub-haplogroup affiliation of these ...

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 ...

Comparisons of Y-haplogroup frequencies among three Cretan populations as well as with published data from additional Mediterranean locations revealed significant differences in the frequency ...

Scientists sort these different Y chromosomes into different groups known as "Y-haplogroups." There are about 20 recognized Y-haplogroups, and most are associated with specific regions of the world.

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 ...