Scientists use microRNAs to track evolutionary history for first time
Thursday, September 10, 2009 - 06:42
in Paleontology & Archaeology
The large group of segmented worms known as annelids, which includes earthworms, leeches and bristle worms, evolved millions of years ago and can be found in every corner of the world. Although annelids are one of the most abundant animal groups on the planet, scientists have struggled to understand how the different species of this biologically diverse group relate to each other in terms of their evolutionary history. Now a team of scientists from Yale University and Dartmouth College has used a groundbreaking method to untangle some of that history...