It's also possible that spider is a homozygous lethal mutation or that the homozygous spiders are in some way imperfect so not being publicized. Homozygous lethal mutations could still be good for crosses with other morphs or alone, people just would stop bothering to breed two of them together. It wouldn't necessarily mean there would be anything wrong with the heterozygous animals. Maybe as ball python mutations become cheaper we can get more information about such possibilities.

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• dominant vs. co-dominant - forkit, Mon Jun 12 12:54:35 2006
• RE: dominant vs. co-dominant - pichereptiles, Mon Jun 12 13:03:52 2006
• RE: dominant vs. co-dominant - johnavilla, Mon Jun 12 13:05:08 2006
• RE: dominant vs. co-dominant - muddoc, Mon Jun 12 13:07:18 2006
• RE: dominant vs. co-dominant - goose82, Mon Jun 12 18:27:55 2006
• RE: dominant vs. co-dominant - Kingofspades, Mon Jun 12 22:16:41 2006
• RE: dominant vs. co-dominant - RandyRemington, Mon Jun 12 23:20:57 2006