Extreme Harlequin Crested Geckos: Hype vs. Reality
Extreme harlequin crested geckos are outcomes of polygenic selection, not a single gene. Learn what it really takes to breed them, and why "guaranteed extremes" is a red flag.
TL;DR: Extreme harlequin is a polygenic trait: no single pairing guarantees extreme offspring. Q: Is extreme harlequin a proven morph in crested geckos? A: No. Extreme harlequin is a polygenic trait, not a single-gene proven morph. It sits at the high end of the harlequin pattern spectrum and is produced through multi-generation selective breeding. You cannot predict exact offspring ratios with a Punnett square the way you can with Lilly White or Axanthic.
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