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Leucistic Texas Rat Genetics Question...

Doug89 Jul 17, 2005 01:53 AM

Hey guys. I was just reading an article about genetic morphs in snakes with a description of each chromatosphore mutation. It said that leucistic animals often have very dark eyes but if crossed with an amelanistic animals this reduces the contrast. My snake has light blue-gray eyes, does this mean she is a het for amelanism? So if i were to breed her to another light blue or gray eyed LTR snake would ~25% of the babies be both Amelanistic and Leucistic? 50% Be Het for Amelanism and 25% be pure leucistic? Thanks Guys!
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-Doug Daly

"Aren't you two a little old to be drinking illegally?"

0.1.0 Leucistic Texas Rat Snake (Elaphe Obsoleta lindheimerii)

Replies (1)

Elaphefan Jul 18, 2005 04:23 PM

I think you read something wrong. For a snake to be either leucistic or amelinistic, it must be homo for that trait. If you cross an amelinistic snake with a leucistic snake, the offspring will all be wild types that are double het for the two traits, unless one or both were het for the other's recessive trait.

I have not heard of there being partial dominance for the amelinistic trait in leucistic rat snakes, but there are some leucistic rat snakes out there that are also amelinistic and have pink eyes.

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