Anyone who's taken basic high school biology should shudder at this sentance. However, I understand what you're trying to ask
The genetic traits that are bred for in crested geckos are, for the most part, polygenetic. It's not like you have one particular dominant trait that causes a CG to display the harlequin pattern, another that causes flames, another that causes pinning etc. I believe that in fact all three of those 'morphs' are pretty genetically intertwined.
With breeding crested geckos, think of it like breeding dogs or breeding horses.. but put yourself back a few thousand years, as gecko 'breeds' haven't been as well defined yet as horses or dogs. Think about what traits you want in offspring, find some adults that best display those traits, breed them, and keep back the best offspring that display those traits even more strongly to be the next generation.









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