Free fingers have many obvious advantages on land, such as in locomotion and grasping, while webbed fingers are typical of aquatic or gliding animals. But both amphibians and amniotes -- which include mammals, reptiles, and birds -- can have webbed digits. Scientists now show that during embryo development, some animal species detect the presence of atmospheric oxygen, which triggers removal of interdigital webbing.

Date: June 13, 2019
Source: Cell Press

 


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