Think you’ve got your head wrapped around Mechanisms of Evolution? Put your knowledge to
the test. Good luck — the Stickman is counting on you!
Q. Selection occurring when the mean of a population phenotype is favored is
Disruptive
Directional
Stabilizing
Sexual
Allopatric
Q. Which of the following best describes all the genes in a population?
Genetic equilibrium
Genotype
Phenotype
Gene pool
Genetic drift
Q. Why is sympatric speciation less common than allopatric speciation?
Most populations are reproductively isolated.
Most organisms are favored for the extreme phenotypes of a population.
Not all species migrate.
Most populations are not geographically isolated.
All of the above are reasons
Q. Which of the following causes microevolution?
Adaptive mutations
Natural Selection
Sexual Selection
Genetic drift
All of the above
Q. For a population of ferns, there are two alleles for a gene that distinguishes height. Forty percent of gametes in the population have a gene that gives a taller plant. What percent of the gametes in the population have the second allele for a shorter plant?
70%
60%
50%
40%
100%
Q. Genetic flow is sometimes caused by
Migration
Sexual selection
Natural selection
Random mating
All of the above
Q. Which of the following best describes two bear populations exchanging genes?
Gene flow
Gene pool
Genetic equilibrium
Genotype
Natural Selection
Q. When does the Hardy-Weinberg principle apply?
During microevolution
When allelic frequencies are changing
During genetic equilibrium and random mating
When natural selection is occurring
When a species diverges into two species
Q. Which of the following situations could lead to the founder effect in a woodpecker population?
Deforestation
Intersexual selection for males with a louder mating call
A few woodpeckers moving to a new section of the habitat
Random mating
Migration to a new location
Q. A portion of a fruit fly population is now unable to mate with the rest of the fruit flies, but can mate within this new group. What has occurred?
Coevolution
Convergent evolution
Bottleneck effect
Speciation
Gene flow