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

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

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