Anthropology 101 - Human Biological Evolution » Winter 2020 » Chapter 4 Quiz

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Question #1
What effect does natural selection have on population variation?
A.   It does not affect variation.
B.   It increases variation.
C.   It decreases variation.
D.   It both increases and decreases variation.
Question #2
Over a period of two generations, the frequency of green dung beetles in a population shifts from 75% to 71% while the frequency of brown dung beetles within this population shifts from 25% to 29%. This is an example of:
A.   microevolution.
B.   minievolution.
C.   nanoevolution.
D.   millievolution.
Question #3
Hardy-Weinberg equilibrium assumes:
A.   a significant mutation rate from generation to generation.
B.   no gene flow, mutation, or natural selection.
C.   strong selection pressure on the trait(s) being studied.
D.   gene flow that is equal both into and out of the population.
Question #4
Familial hypercholesterolemia, an autosomal dominant disease, is five times more frequent in the Afrikaner population of South Africa than in the original population of Europe from which the ancestors to the Afrikaners immigrated. This represents an example of:
A.   kin selection.
B.   natural selection.
C.   bottleneck.
D.   the founder effect.
Question #5
Australian aborigines are an endogamous society. This means that marriage and reproduction take place within the group, leading to:
A.   increased genetic diversity through genetic drift.
B.   migration without gene flow.
C.   more genetic diversity than would be observed in an exogamous society.
D.   decreased genetic diversity due to a lack of admixture.
Question #6
Studies of Galapagos finches have found that at certain points in time all finches on the island have either wide beaks or sharp narrow beaks. The type of evolution that leads to this phenotype distribution is _______ selection.
A.   stabilizing
B.   directional
C.   disruptive
D.   natural
Question #7
The physical location of a gene within the genome is called the:
A.   address.
B.   nucleus.
C.   chromosome.
D.   locus.
Question #8
The type of selection that favored progressively larger brain size in human evolution is _______ selection.
A.   disruptive
B.   natural
C.   directional
D.   stabilizing
Question #9
Familial hypercholesterolemia, an autosomal dominant disease, is five times more frequent in the Afrikaner population of South Africa than in the original population of Europe from which the ancestors to the Afrikaners immigrated. This represents an example of:
A.   the founder effect.
B.   kin selection.
C.   natural selection.
D.   bottleneck.
Question #10
Which of the evolutionary forces is most likely to decrease variation between populations?
A.   natural selection
B.   mutation
C.   gene flow
D.   the founder effect

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