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.