Anthropology 101 - Human Biological Evolution » Fall 2020 » Evolution and Genetics Quiz

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Question #1
The modern definition of evolution is:
A.   Descent with modification
B.   Survival of the fittest
C.   Scientists have still not defined evolution
D.   A change in gene frequencies from generation to generation
Question #2
The expanded description of evolution put forward by scientists since Darwin’s research is referred to as the
A.   revisionist evolutionary theory.
B.   fitness fusion.
C.   punctuated equilibrium theory.
D.   evolutionary or modern synthesis.
Question #3
All of the following can change gene frequencies from one generation to the next EXCEPT
A.   Migration
B.   Devolution
C.   Mutation
D.   Natural selection
Question #4
All of the following affect allele frequencies EXCEPT
A.   genetic drift
B.   natural selection
C.   migration
D.   genetic shift
Question #5
The processes of evolution are
A.   genetic variation, phenotypic variation, adaptation, and exaptation.
B.   mutation, gene flow, genetic drift, and natural selection.
C.   stabilizing selection, directional selection, and disruptive selection.
D.   natural selection, directional selection, and stabilizing selection.
Question #6
Natural selection changes gene frequencies because:
A.   production of new alleles
B.   chance loss of alleles in a population
C.   exchange of genes between populations
D.   differential reproductive success of individuals
Question #7
Mutation can change gene frequencies when
A.   False; mutations cannot change gene frequencies
B.   The mutation changes the gene itself and the gene spreads through the population
C.   Devolution occurs
D.   When X-Men threaten the world
Question #8
Gene flow can change gene frequencies when
A.   Speciation occurs
B.   Individuals move from one population to another
C.   False; gene flow cannot change gene frequencies
D.   Individuals from two different populations produce offspring
Question #9
Migration can change gene frequencies when
A.   False; migration cannot change gene frequencies
B.   Individuals move from one population to another
C.   Individuals from two different populations produce offspring
D.   Speciation occurs
Question #10
What is gene flow defined as?
A.   exchange of genes between populations
B.   chance loss of alleles in a population
C.   production of new alleles
D.   differential reproductive success of individuals
Question #11
Mutations may cause:
A.   differential reproductive success of individuals
B.   the production of new alleles
C.   the exchange of genes between populations
D.   a chance loss of alleles in a population
Question #12
What can genetic drift cause?
A.   differential reproductive success of individuals
B.   production of new alleles
C.   exchange of genes between populations
D.   chance loss of alleles in a population
Question #13
Genetic drift is
A.   not evolutionary change
B.   the change in allele frequencies produced by random factors
C.   the change in allele frequencies produced by nonrandom factors
D.   the opposite of founder effect
Question #14
The _________________ usually occurs after genetic drift in a group that remains reproductively isolated (avoids mating with individuals) from surrounding groups.
A.   enhancement of adaptation
B.   founders effect
C.   equilibrium of population genetics
D.   stabilization of gene flow
Question #15
The ABO blood type system consists of ______ alleles.
A.   6
B.   4
C.   3
D.   2
Question #16
What is type AB blood an example of?
A.   codominance
B.   dominance
C.   blending
D.   recessiveness
Question #17
Which of the following types of traits are governed by more than one genetic locus?
A.   polygenic
B.   Mendelian
C.   recessive
D.   dominant
Question #18
Continuously varying traits
A.   are affected by genes at many loci.
B.   a single gene has only a small effect on the phenotype.
C.   All of these statements are correct
D.   can be greatly impacted by the environment.
Question #19
Darwin was not able to explain how variation is maintained among individuals. Which of the following is a partial explanation of how variation is maintained among individuals?
A.   individuals behave in ways that benefit other individuals in the group
B.   through the mechanism of blending inheritance
C.   by the principles of Mendelian inheritance and variation hidden as recessive alleles
D.   the mechanism of natural selection
Question #20
Darwin was not able to explain the how novel traits might appear in a species or how a species may move beyond their initial range of variation. Which of the following genetic phenomena contribute to the appearance of novel traits among individuals?
A.   genetic drift and the founder effect
B.   homologous traits and interspecific variation
C.   mutation and recombination
D.   natural selection and genetic drift

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