Q5 What happened to beak depths in the virtual finch populat

Q5. What happened to beak depths in the virtual finch population when selection on beak depth was eliminated (selection strength 0) and mutation rate for alleles determining beak depth was greater than zero? O Average beak depth consistently increased O Average beak depth consistently decreased O The range in beak depths (largest to smallest became larger O The range in beak depths became smaller Q6. The Correlated Traits exercise shows that: When two characters are correlated, selection always favors larger values for both or smaller values for both O When two characters are correlated, one of them can evolve toward higher values even if smaller values are better for survival. o When two characters are correlated, selection is always strong on both or weak on both O When two characters are correlated, the optimal values and selection strengths rise and fall together. Q7. In the Mountains and Valleys exercise, which of the following parameters had the largest influence on whether the finch population evolved a bimodal distribution? The speed at which the model ran O The difference in carrying capacity between the wet versus dry sides of the island. O The number of chicks each pair of parents produced each year. How far the birds flew when looking for a mate.

Solution

5) When the selection strength becomes 0 and rate of mutation is >0, then varying sizes of beaks with varying depth are observed. The range in beaks from larger to smaller is increased. Option 3 is correct.

6) Correlated exercise shows that two characters can be correlated and one of them shows evolution towards higher value even when the smaller value is also having better chances of survival. For example, in finches with same beak length and width have shown better survival rate of finches with high beak depth. Option 2 is correct.

7) In mountains and valleys exercise, largest influence on finch bimodal distribution depended on dry adn wet conditions on either side of island and carrying capacity of finches on each side. This is because wet side favored more finch population with highest carrying capacity than in dry side. Option 2 is correct.

8) Large and small seeds are characteristics representing subpopulations in population divided by geographicl barriers. In absence, geographical barriers, the population cannot divide into subpopulations and exhibit difference beak size as large and small according to large or small seed size. Thus, option 1 is correct.