1) Suppose that in a population of ruddy ducks, 45 percent of individuals with the beta-1 mutation survive from hatchling to the first year, while individuals without the mutation have a survival rate of 58 percent. This mutation does not affect any other component of fitness. We would call beta-1 a(n) _______ mutation.

a)deleterious

b)neutral

c)stabilizing

d)beneficial

e)artificial

2)In a population of sparrows, the allele G (at a locus with two alleles) is at a frequency of 0.7, and 50 percent of the population is heterozygous. Assuming that the population is large, which is the most reasonable hypothesis for the pattern?

a)The population is deviating from Hardy–Weinberg equilibrium due to natural selection against heterozygotes.

b)The population is deviating from Hardy–Weinberg equilibrium due to sexual selection, wherein GG individuals prefer to mate with gg individuals.

c)The population is at Hardy–Weinberg equilibrium.

d)The population is deviating from Hardy–Weinberg equilibrium due to gene flow from different populations.

e)The population is deviating from Hardy–Weinberg equilibrium due to sexual selection, wherein GG individuals prefer to mate with other GG individuals.

3)A population of a copepod species faced predation from fish that preferred larger individuals, but smaller individuals were less likely to obtain sufficient resources to reproduce. The size of the copepods has remained stable over several generations. Most likely, the population is experiencing _______. If the fish predators were to increase in number, the population would most likely experience _______.
a)stabilizing selection; directional selection for larger size
b)stabilizing selection; directional selection for smaller size
c)directional selection for smaller size; disruptive selection
d)directional selection for larger size; stabilizing selection
e)disruptive selection; stabilizing selection

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1 The answer will be deleterious mutation Option a Explanation If the mutati... View the full answer