If person A has had the genes dictating their sight/ the internal structure of their eyes, replaced by say, eagle eyes or cat eyes.
What happens when they reproduce with person B who has regular human genetics?
I would imagine that the genes governing eye structure in cats are incompatible with the genes governing eye structure in humans.
Would the offspring of A and B just not have eyes? Or would their eyes not form properly? Or would they maybe have one set of genes dominate the other and act as a single source of information for the formation of their eyes?
Essentially my question is what happens when two humans/animals that share the majority of their genetics (enough to count as the same species) but have key differences in certain sets of genes mate together?