For what it's worth, colubrid snakes have sex chromosomes. Except that the females have the unequal sized sex chromosomes (one large and one smaller) while the males have equal sized chromosomes (two large chromosomes). This is the same pattern that is found in birds and is opposite to the pattern found in mammals.

Paul Hollander

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• Embryonic temperature determines sexuality in reptiles? - ZFelicien, Mon Sep 19 10:21:38 2005
• RE: Embryonic temperature determines sexuality in reptiles? - bluerosy, Mon Sep 19 17:20:15 2005
• It is noted in peopard geckos............... - TobyEKing, Mon Sep 19 17:38:16 2005
• To add to the question... - crimsonking, Mon Sep 19 20:48:30 2005
• RE: Excellent Question Mark - snakesunlimited1, Mon Sep 19 22:33:57 2005
• RE: Excellent Question Mark - bluerosy, Mon Sep 19 22:54:04 2005
• RE: Excellent Question Mark - snakesunlimited1, Mon Sep 19 23:11:57 2005
• Please explain........ - TobyEKing, Mon Sep 19 23:32:41 2005
• RE: Please explain........ - bluerosy, Tue Sep 20 01:42:03 2005
• da$#% , I wish there was an edit function n/p - bluerosy, Tue Sep 20 01:43:49 2005
• ROFLMAO........................................n/p - TobyEKing, Tue Sep 20 02:21:08 2005
• RE: Please explain........ - jlassiter, Tue Sep 20 18:48:49 2005
• But John.......... - TobyEKing, Tue Sep 20 19:15:05 2005
• actually since you mentioned it - bluerosy, Tue Sep 20 21:16:32 2005
• RE: Embryonic temperature determines sexuality in reptiles? - Paul Hollander, Tue Sep 20 11:15:44 2005