Question

There are pairs of species living in the same general area in which the members look identical but cannot interbreed, usually due to their chromosomes being incompatible and unable to form correct gametes. As time goes on we would expect those species to_________

Answer 1

Answer:

begin to show physical differences  

Explanation:

The answer is

"begin to show physical differences".

Any organisms or species in order to breed, their chromosomes should be compatible and should be able to form a gamete.

In an area,the pair of species, though they look identical are unable to breed because their chromosomes are incompatible and they do not form the correct gametes.

But these species are expected to show different physical characteristics and behaviors as time goes on because their chromosomes are different.

Thus the answer is

"begin to show physical differences".