I agree with Tom, there should be no difference in the longevity of a morphed iguana, especially in captivity unless a trait has been passed that critically flaws the survival of the animal. In opposition to the original post, a morphed iguana may even be genetically stronger than a regular animal since in theory, the animal could have enhanced genetic structure that may be missing in its common form. As far as inbreeding is concerned, animals especially reptiles, specifically iguanas, inbreed naturally in the wild. You can see it on the island of Puerto Rico with the Cuban iguanas, in small colonies of feral common and ctenosaura iguanas throughout including Florida. You don’t see those populations contracting. The reason for lack of “morphed” iguanas in the wild is not due to longevity as a direct cause, it is because of indirect circumstances such as loss of eye sight in some albino iguanas, White, yellow, Blue are colors you can’t hide in the wild and may actually attract predation, etc.. With all this said, yes you will eventually run into problems when inbreeding and that is when you will need to introduce new blood to get rid of the unwanted traits while maintain or acquiring desired traits.

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