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.   A change in gene frequencies from generation to generation
C.   Survival of the fittest
D.   Scientists have still not defined evolution
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.   Mutation
B.   Natural selection
C.   Migration
D.   Devolution
Question #4
All of the following affect allele frequencies EXCEPT
A.   natural selection
B.   genetic drift
C.   migration
D.   genetic shift
Question #5
The processes of evolution are
A.   natural selection, directional selection, and stabilizing selection.
B.   mutation, gene flow, genetic drift, and natural selection.
C.   genetic variation, phenotypic variation, adaptation, and exaptation.
D.   stabilizing selection, directional selection, and disruptive selection.
Question #6
Natural selection changes gene frequencies because:
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 #7
Mutation can change gene frequencies when
A.   False; mutations cannot change gene frequencies
B.   Devolution occurs
C.   When X-Men threaten the world
D.   The mutation changes the gene itself and the gene spreads through the population
Question #8
Gene flow can change gene frequencies when
A.   Individuals move from one population to another
B.   False; gene flow cannot change gene frequencies
C.   Speciation occurs
D.   Individuals from two different populations produce offspring
Question #9
Migration can change gene frequencies when
A.   Individuals move from one population to another
B.   Speciation occurs
C.   False; migration cannot change gene frequencies
D.   Individuals from two different populations produce offspring
Question #10
What is gene flow defined as?
A.   differential reproductive success of individuals
B.   exchange of genes between populations
C.   chance loss of alleles in a population
D.   production of new alleles
Question #11
Mutations may cause:
A.   differential reproductive success of individuals
B.   a chance loss of alleles in a population
C.   the exchange of genes between populations
D.   the production of new alleles
Question #12
What can genetic drift cause?
A.   chance loss of alleles in a population
B.   exchange of genes between populations
C.   differential reproductive success of individuals
D.   production of new alleles
Question #13
Genetic drift is
A.   the change in allele frequencies produced by nonrandom factors
B.   the change in allele frequencies produced by random factors
C.   not evolutionary change
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.   3
B.   4
C.   2
D.   6
Question #16
What is type AB blood an example of?
A.   dominance
B.   codominance
C.   recessiveness
D.   blending
Question #17
Which of the following types of traits are governed by more than one genetic locus?
A.   recessive
B.   polygenic
C.   Mendelian
D.   dominant
Question #18
Continuously varying traits
A.   are affected by genes at many loci.
B.   All of these statements are correct
C.   a single gene has only a small effect on the phenotype.
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.   by the principles of Mendelian inheritance and variation hidden as recessive alleles
C.   the mechanism of natural selection
D.   through the mechanism of blending inheritance
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.   natural selection and genetic drift
B.   mutation and recombination
C.   genetic drift and the founder effect
D.   homologous traits and interspecific variation

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