66% Double Hets question

[Freakie_frog]

I have a question. In the breeding of DH to DH would the odds be greater than 66% that you would at least receive one of the mutations (regardless of which one it is) in the animal, or would it stay at 66%. What is the calculation to arrive at the figure.

As with any DH to DH breeding statically the odds are Very GOOD..i.e. breeding Pewter X Pewter still give's each animal that isn't a Double Homo a 66% chance of being a Het for both traits which means in something like a Pewter x Pewter breeding each egg only has a 6.25% chance at being a normal..which means there is a 93.75% chance that every animal will carry at least one copy of some Morph gene.