incomplete dom gene

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Originally Posted by Annarose15

Just to play devil's advocate - How about Spinners? I know we call pinstripe and spider genes dominant, but the combination is very different (to me). :rolleye2:

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Dominant, codominant and recessive are comparative terms that apply only when two genes can be in the same gene pair. Spider and pinstripe genes are in different gene pairs.

Neither the spider mutant nor the pinstripe mutant is recessive to the appropriate normal gene.

Nobody has proven a homozygous spider by breeding test, so the jury is still out on whether spider is dominant or codominant to its normal gene.

I have heard claims that at least one person has had a pinstripe sire several clutches without producing any normals. If so, that would make pinstripe a dominant mutant gene. But it will take more pinstripe snakes with the same breeding pattern to fully convince me.