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DNA analysis suggests polar bears evolved relatively recently

Ursus maritimus , the polar bear, is a specialized predator that (ignoring those that forage for garbage in towns and villages along the Arctic coast) hunts solely on sea ice. Several studies have concurred that polar bears are closely related to brown bears. However, there is substantial disagreement...

Evolution is a complex process, just ask the Transylvanian naked-neck chicken

Prior posts have noted that selection factors that influence evolution can be highly variable, and sometimes surprising. It is not the simple "survival of the fitest" postulated by Darwin (who in fairness could not have known about many of the selection factors and processes described in these...

Could DNA that is no longer present in the human genome have helped to make humans what we are? Very likely.

Prior posts have looked at a variety of issues related to genes and what allegedly makes humans what we supposedly are. But, is it possible that DNA that is no longer present in the genome also helped to shape us? How would we know? Most research into homo sapien genomics has focused on teasing out...