Contents

24 April 2009
Vol 324, Issue 5926

About The Cover

Cover image expansion

COVER Animal domestication has been key to the development of human societies. The sequence of the bovine genome reveals new insights into the history and biology of cattle. See pages 522 and 528, and related research on horse and sheep genetics and domestication on pages 485 and 532. Photo illustration: Yael Kats (images: Jupiterimages)