
For the first time, scientists have reconstructed part of the male chromosome in polar bears. The scientists were able to assign 1.9 million base pairs specifically to the polar bear Y chromosome.They now show that more than 100,000 years ago, the male polar bear lineages split and developed in two separate genetic groups.img src=”http://feeds.feedburner.com/~r/sciencedaily/~4/G_37y_w6GEY” height=”1″ width=”1″ alt=””/
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