Question

If two populations of a species exist in isolation from each other, and one population experiences genetic drift while the other does not, what is the most likely outcome?

• A. The two populations will experience allopatric speciation.
• B. The population that experiences genetic drift will go extinct.
• C. The two populations, because they are the same species, will stay in Hardy-Weinberg equilibrium with each other.
• D. Evolution will occur, since the gene frequencies in the gene pools of the two populations will change.

Answer 1

Answer: (A)

The two populations will experience allopatric speciation.

The two species are in isolation from each other, that is there is no genetic exchange between the two species. In one of the populations genetic drift occurs, a sudden change in frequency of an allele may lead to formation of new species

So, the correct answer is 'The two populations will experience allopatric speciation'