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Molecular evidence used to pinpoint when mammals became nocturnal

picture of wood rat at night
Damian Kuzdak/Getty Images
Apr 22 2017

Posted In:

Research, Faculty

New genetic evidence suggesting that early mammals had good night-time vision adds to fossil and behavioral studies indicating that early mammals were nocturnal. In a study led by Liz Hadly, professor of biology, scientists examined genes involved in night vision in animals throughout the evolutionary tree, looking for places where those genes became enhanced.  Professor Hadly is the senior author of the study published April 21 in Scientific Reports.