limbs

05/11/2012 - 13:46

Brittle stars and people have something in common: They move in fundamentally similar ways. Though not bilaterally symmetrical like humans and many other animals, brittle stars have come up with a mechanism to choose any of its five limbs to direct its movement on the seabed. It’s as if each arm can be the creature's front, capable of locomotion and charting direction. Results appear in the Journal of Experimental Biology.

07/11/2011 - 20:18

Genetic instructions for developing limbs and digits were present in primitive fish millions of years before their descendants first crawled on to land, researchers have discovered.