(Solved): Please help with these two. Please explain why the right answer is right and why the others are not ...

2. (Multiple Choice) Which of the following would you expect to show the most genetic differentiation between populations (i.e. the highest FST values)? a. a forest species that, due to forest habitat fragmentation, now exists in small patches far from each other b. a beetle species with populations that all have very large \( \mathrm{N}_{e} \) c. a coral reef fish species with widely dispersing juveniles d. a plant species with a wide geographic range that lives in disturbed habitats such as roadsides 3. (Multiple Choice) Suppose that a population of hedgehogs contains 100 males and 100 females, but only the dominant 10 males mate. Each of the 10 dominant males mates with a different group of 10 females, so all 100 females mate. Suppose that the A locus in this population is not experiencing natural selection, that the frequency of the \( A \) allele is \( 0.5 \) and that the frequency of the a allele is \( 0.5 \). Using only this information, by how much would you expect the frequency of the a allele to change in one generation by genetic drift alone? a. on average, it will decrease by about \( 0.06 \) b. on average, it will change by about \( 0.06 \), but it's not possible to say whether it will increase or decrease c. on average, it will decrease by about \( 0.025 \) d. on average, it will change by about \( 0.025 \), but it's not possible to say whether it will increase or decrease