From: utzoo!decvax!ucbvax!npois!harpo!defunct Newsgroups: net.jokes.q Title: genes Article-I.D.: harpo.758 Posted: Sun Jun 13 11:42:28 1982 Received: Mon Jun 14 01:14:17 1982 Q. How do you tell a girl chromosome from a boy chromosome? A. Peek inside its genes.