Question

Two species that have experienced several thousand years of isolation from one another are now incapable of producing viable offspring despite mating efforts. What type of reproductive isolating mechanism developed between the two species?

Answer 1

Reproductive isolation mechanisms called prezygotic barriers develop between species that have experienced isolation, preventing mating and successful reproduction.

Step-by-step explanation:

Reproductive isolation mechanisms developed between the two species that experienced several thousand years of isolation from each other are called prezygotic barriers. These mechanisms prevent reproduction prior to the formation of a zygote. Examples of prezygotic barriers include differences in mating seasons, courtship behaviors, or breeding schedules.

For instance, if two species of frogs inhabit the same area but have different breeding seasons, they will not be able to mate and produce viable offspring. One frog species may reproduce from January to March, while the other reproduces from March to May.

In conclusion, prezygotic barriers prevent mating and successful reproduction between isolated species, leading to the development of reproductive isolating mechanisms.