Quote Originally Posted by mainbutter View Post
As far as proving recessive lethality.. with the jaguar trait in carpet pythons, it's easy. Hatchlings don't fully develop in the egg, and they die off before melanin production occurs. You get all-white baby snakes, dead in their eggs, that ALMOST go full term. It's worked out to be about on average 1/4 of a clutch is dead white snakes from a jag x jag breeding, so it's been inferred that the jaguar trait is homozygous-lethal.
They hatch alive, then die right after, someone even had one live over night, but passed that day. it was pretty obvious it was the homozygous version of the jag, lucy carpet. carpets give you a bigger clutch size so its easier to see things like this compared to ball pythons also.