Reptile & Amphibian Forums

Im quite confused as to the genetics of Het's for any simple recessive trait, I have two het alibino retics clark strain, and thought that if i bred them P should be albino and the other 50% should be 100% het, however now i think its more of a 25% for the albinos, and 50% to be het and 25% normal.

Any help would be greatly appreciated.
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Pat
"You keep WHAT in your freezer?" "Mice. And rats. If that bothers you, I can call them 'cows' instead."

1.2 Water Pythons (Liasis Fuscus)
1.1 (100% het albino Clark Strain) Retics
1.1 Coastal Carpet Pythons
.1 Nhandu Chromatus
.1 Pitbull Wolfe mix

With a simple recessive, the latter is correct. You will get 25% Albino (or whatever the trait is), 50% Het, and 25% normal. The problem is with most recessive traits, you won't know which of the hets are hets and which are not, so that is where the 66% het comes from (as in 2 out of 3 are het and 1 is not).

Patrick Powers
Manager of Prehistoric Pets

If its 25% normal, How is it possible to create 100% hets? Or would that be from a breeding where the two traits are already shown?
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Pat
"You keep WHAT in your freezer?" "Mice. And rats. If that bothers you, I can call them 'cows' instead."

1.2 Water Pythons (Liasis Fuscus)
1.1 (100% het albino Clark Strain) Retics
1.1 Coastal Carpet Pythons
.1 Nhandu Chromatus
.1 Pitbull Wolfe mix

The only way to produce 100% hets is to have one but not both parents be visible homozygous morphs. For instance and albino bred to a normal would result in a clutch of all 100% hets meaning that every single baby is het albino. An albino bred to a het albino would result in a clutch of 1/2 albinos and 1/2 100% hets and so on. Hope this helps!