BIO102 Chapter 15

Why do prokaryotes and eukaryotes differ in their reliance on mutations for generating genetic variation? Prokaryotes are smaller in size than eukaryotes. Prokaryotes sexually reproduce, eukaryotes do not. Eukaryotes sexually reproduce, prokaryotes do not. Eukaryotes possess a nucleus, prokaryotes do not. Prokaryotes are single-celled, eukaryotes are multicellular.

Eukaryotes sexually reproduce, prokaryotes do not.

Polydactylism (possessing more than five fingers per hand) within the Amish population in Pennsylvania is considered an example of founder effect. This is because the frequency of polydactylism among the Amish in Pennsylvania is identical to its frequency among the Amish population in Germany. True False

False

What is the genotype of an individual that is lives in protection from both sickle cell disease and malaria? HbAHbA HbAHbS HbSHbS HbS Hbs HbA Hba

HbAHbS

Which individual would be considered the fittest? Individual that has the longest canine teeth within the group Individual that has the greatest number of breeding opportunities Individual that has the best camoflauge to avoid predators Individual that controls the largest territory Individual that has the greatest number of offspring

Individual that has the greatest number of offspring

Which of the following is not one of the conditions required for Hardy-Weinberg equilibrium? Mutations must not occur. Natural selection must not occur. Random mating must not occur. Genetic drift must not occur. Assortative mating must not occur.

Random mating must not occur.

In the figure shown here, flower color of a population is distributed in a bell-shaped normal curve. If the white flower color increases in frequency in the population, this would illustrate stabilizing selection. disruptive selection. directional selection. genetic drift.

directional selection

British land snails primarily occur in two extreme phenotypes. This is an example of directional selection. stabilizing selection. disruptive selection. genetic drift. mutation.

disruptive selection.

In the Hardy-Weinberg formula, what does q2 represent? frequency of the dominant allele frequency of the recessive allele frequency of the heterozygotes frequency of the homozygous dominants frequency of the homozygous recessives

frequency of the homozygous recessives

If the survivors of an original population survived due to specific phenotypes that they possessed, then this event is an example of natural selection. genetic drift. founder effect. industrial melanism.

natural selection.

In the figure shown here, flower color of a population is distributed in a bell-shaped normal curve. If the pink flower color increases in frequency in the population, this would illustrate stabilizing selection. disruptive selection. directional selection. genetic drift.

stabilizing selection.