You guys heard of this?

I was watching some recent NERD videos and Kevin was talking about some 2 gene combos that are incapable of reproducing themselves. So if you breed an animal that is AB to a normal all the babies will either be A or B. You will not see the AB combo in the offspring. So he made up the term "Acts Like Super" to describe it.

I think he used Toffino as an example. If you breed a Toffino to a normal, you won't know what is het for what because they will al either be het Albino or het Toffee. None would be double het.

Anyone else dealt with combos like that?