Bioscience

Y Chromosome Tree Reshaped

April 2, 2008

By Flinn Foundation

[Source: By a GenomeWeb staff reporter ] – A group of scientists today unveiled a newly revised version of the Y chromosome haplogroup tree including information from hundreds of previously unincorporated genetic markers.

The researchers, based at the University of Arizona and Stanford University, have reworked the Y chromosome haplogroup tree for the first time in five years or so, incorporating nearly 600 additional genetic markers to create more than 300 reorganized haplogroups in 20 clades. Their paper, which appeared online today in the journal Genome Research, describes these re-arrangements and their implications for future work assessing Y chromosome polymorphisms.

The Y chromosome is the sex chromosome that