In a population of people off the coast of New Quinoa, a recessive allele for al

Question

In a population of people off the coast of New Quinoa, a recessive allele for albinism is quite
frequent. One in 100 people of the population are albino and homozygous recessive for this
allele. Assuming Hardy-Weinberg conditions, what is the frequency of people that are
homozygous dominant for the condition?
a. 1%
b. 18%
c. 81%
d. 99%

2. In a population of dragonflies, abdomen color varies between dark red and light yellow. The
alleles for these colors show incomplete dominance with heterozygotes being intermediate in
color. Dragonflies with intermediate coloration are more likely to be eaten by birds,
and so the population tends to have higher frequencies of dragonflies that are
homozygous for abdomen color. This is consistent with:
a. Female mate-selection
b. Heterozygote advantage
c. Genetic drift
d. Disruptive selection

3. A population of chrysanthemums has two colors: purple, which is dominant, and white, which is
recessive. The frequency of the dominant allele is 0.4. If there are
100 plants in this population, approximately how many of them
should be homozygous recessive for flower color?
a. 13
b. 36
c. 49
d. 72

4. Blubber is a thick layer of fat tissue found under the skin of all elephant seals, conveying an
advantage in making them tolerate cold water temperatures. This trait has a strong genetic
basis, and all elephant seals have the genotype that produces blubber. Is this trait currently
undergoing selection?
a. Probably, because it confers an advantage
b. Probably not, because it is now produced by the seals

Explanation / Answer

a d c a

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