Contents

14 March 2008
Vol 319, Issue 5869

About The Cover

Cover image expansion

COVER Tomato (Solanum lycopersicum) domestication and selection resulted in an explosion of different fruit shapes and sizes, as exemplified by heirloom varieties. Wild ancestors of tomatoes such as S. pimpinellifolium, the smallest fruit shown here, were round (middle row, second from left). See page 1527.

Image: Kelly Krause/Science; photos: Esther van der Knaap