Evolution: how do characters evolve?

Abstract excerpt

Ricklefs claims to show that morphological evolution in birds is associated with speciation events--that is, it is punctuational--by inference from data on only species number, clade age and character variance from a range of passerine clades. He suggests that variance increases in proportion with clade age under gradual change, but in proportion to the logarithm of species number if change is punctuational. Here...

Topics

Share this publication in a Topic to start or enrich a Post.

• Share to Aging
• Share to Biodiversity
• Share to Biological Evolution