Words from Ron Tremper

In the last years many of you that obtained my gene for Giant leopard geckos have produced offspring that are Giant in size from breeding one of my Giants to a gecko(s) that does not carry the gene for Giant. Five such people have asked me if there was a chance that my gene for Giant was CO-DOMINANT .

My answer has been, up to now, that the Giant gene was a simple recessive trait. The first "hets" I made were few in number and once I got pure Giants it was not needed to produce more such hets here. Since many more "hets" were being produced by other breeders, than I produced as a simple step to get the original pure Giants, I decided to "redo" this "het" step and create a far more larger group of geckos to study at my end. I wanted to see what others were reporting.

My new findings reflect that in fact my Giant gene is a true CO-DOMINANT. This means that the Giant gene has an equal chance of being expressed when combined with the gene to be a normal sized gecko. Hence, only one Giant parent needs to be present to express this Giantism in the first generation. I thank everyone that raised this important question. Science is great stuff........the book chapter on genetics will go into all the morphs in detail. Take care, Ron...........