Like Silly-atus fan said crested geckos are polymorphic. It means that color is based on a number of different alleles; any combination of which will yield a different color and pattern. It is not like breeding two albinos together, which will always have albino offspring (only based on one allele). Polymorphism is more complicated and much harder to predict (although years of selective breeding can make the trait breed more true). With cresties breeding say two fires will increase your chance of having fire hatchlings, but not all of them will. It also mean you can get fire hatchlings from non-fire parents on occasion. It all depends on how the different alleles pair up. That’s why high- end morphs cost more; they increase your chances of the traits being carried to the offspring. Hope it makes a little more sense now.



As for as the temp sexing; never tried it. I usually get a good ratio of males and females so never really bothered experimenting with it, so I can’t say for sure if it works. But I trust Silly-atus fan =).

-Mike

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