No gecko is “Het” for Harlequin. A Harlequin Crested Gecko is any gecko displaying the acceptable color characteristics to be called a “Harlequin”. These characteristics are not from one genetic factor that can be passed on. They are an amalgam of a number of color, pattern, and location genetic information that are passed and matched in a broad pattern. You can narrow that pattern with selective breeding. In that case what you’re doing is limiting the genetic pool and possible genetic options. So if you breed red geckos to red geckos long enough, you’ll get a high number of red offspring. Yet even those offspring will vary in intensity from one to another.

So you can make a 1 1= 2 correlation between parents and offspring, which is the way you are asking the question. As of now CG do not have “simple recessive” or “dominate” traits you can pass on (example: albinism). What you have is a blending of the visible traits. You simply look at the traits in the parent’s genetic line to get as good of a guess of what to expect from potential offspring.
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-Randy May
www.neoscales.com
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