Contents

11 January 2002
Vol 295, Issue 5553

About The Cover

Cover image expansion

COVER Execution of a fire ant (Solenopsis invicta) queen. Workers immobilize an unwanted queen by pulling on her legs and antennae, then they gradually bite and sting her to death. A single gene influences acceptance or rejection of queens, ultimately controlling the social organization of the colony. 328 [Photo: John All]