Posted by:
JakeM
at Thu Mar 11 18:15:16 2004 [ Email Message ] [ Show All Posts by JakeM ]
From what I've heard, it's pretty safe to say that spider is a dominant mutation. Like Nigel's saying, though, this label could be changed in the future.
As for the lethal gene theory, I could see this happening. The gene that is mutated in the spider morph could code for some enzyme that was not only necessary for correct (wild-type) pattern formation, but also necessary for some vital metabolic process. Perhaps in the heterozygous form, enough amounts of the functional (wild-type) enzyme would be made to perform this metabolic function, yet not enough would be made for completely normal (wild-type) pattern.
Jake
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