The reproductive system's evolution from dinosaurs to birds
Beijing, China (SPX) Jun 03, 2014 - As winged dinosaurs underwent a series of evolutionary changes during the transition into Aves, or birds, one pivotal transformation was the appearance of a single-ovary reproductive system. "The most widely accepted hypothesis for the presence of a single functional ovary in living birds is that the right ovary ... was lost to reduce body mass in gravid females during flight," report a te ... more
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