Population geneticists study changes in the nature and a...

Question

Population geneticists study changes in the nature and amount of genetic variation in populations, the distribution of different genotypes, and how forces such as selection and drift act on genetic variation to bring about evolutionary change in populations and the formation of new species. From the explanation given in the chapter, what answers would you propose to the following fundamental questions?

How do we know when populations have diverged to the point that they form two different species?

Accepted Answer

Hey everyone. Let's take a look at this question together. Which of the following is not an indication that two individuals are two different species. So when we have a reduced or hindered jean blow and this is between two populations, they may reach a point where they are reproductively isolated. And so at this point, if they can't interbreed, they can't produce viable offspring or they can't produce sterile offspring such as sterile hybrids. Then they are considered two different species. Because all of these are indications that they are considered different species since they can't interbreed produce viable offspring or produce sterile hybrids. So that means that answer choice D. Is the correct answer because the fact that they do not look exactly the same is not an indication that those two individuals are two different species, making it the correct answer. Because all three other answer choices are indications that they are considered different species and so they are incorrect answers. I hope you found this video to be helpful. Thank you and goodbye.

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