Currently browsing: Department of Biology

Mutant champions save imperiled species from almost-certain extinction

By Sandra Hines

February 19, 2013

Species facing widespread and rapid environmental changes can sometimes evolve quickly enough to dodge the extinction bullet. UW scientists consider the genetic underpinnings of such evolutionary rescue.

Piranha kin wielded dental weaponry even T. rex would have admired — with video

By Sandra Hines

December 26, 2012

Taking into consideration size, an ancient relative of piranhas weighing about 20 pounds delivered a bite with more force than prehistoric whale-eating sharks or – even – Tyrannosaurus rex.