Question 1

Which of the following statements is false?

Accepted Answer

A)   All traits of an organism are adaptations.
B)   Traits may arise by default because of structural or physical laws.
C)   Some traits have lost any current function.
D)   Some traits are co-opted to function in a different way than the original function.

Question 2

An evolutionary process in which a small group of individuals account for all of the genetic variation in a large population is called a(n)

Accepted Answer

A)   originator effect.
B)   chance effect.
C)   founder effect.
D)   random effect.

Question 3

Novel genetic complexes arise only via

Accepted Answer

A)   variation.
B)   mutation.
C)   deviation.
D)   derivation.

Question 4

_____________ occurs when individuals seek out mates within the same population but in a different group or subpopulation.

Accepted Answer

A)   Inbreeding
B)   Outbreeding
C)   Assortative mating
D)   Genetic drift

Question 5

_____________ selection is bimodal; that is, it favors more than one form of the trait's variation, usually those at opposite ends of the spectrum.

Accepted Answer

A)   Directional
B)   Natural
C)   Stabilizing
D)   Disruptive

Question 6

Define speciation and three ways that it occurs.

Accepted Answer

Speciation is the process by which new s...

Question 7

_____________ selection favors the variation on a trait that occurs in the middle of the distribution.

Accepted Answer

A)   Directional
B)   Natural
C)   Stabilizing
D)   Disruptive

Question 8

If we measure frequencies of alleles and find that they have changed, then we would do all of the following EXCEPT

Accepted Answer

A)   attempt to determine the affecting process.
B)   check for mutations.
C)   extrapolate the derivations.
D)   see if gene flow occurred.

Question 9

All of the following are descriptive of subspecies EXCEPT

Accepted Answer

A)   they are somehow biologically distinct from other populations of a species.
B)   they are a population within a species.
C)   they engage in little or no gene flow with other populations.
D)   they share similar evolutionary trajectories with other populations.

Question 10

_____________ is seen when species share phenotypic characteristics due to recent common ancestry.

Accepted Answer

A)   Convergent evolution
B)   Parallel evolution
C)   Divergent evolution
D)   Natural evolution

Question 11

The distinctness of a subspecies

Accepted Answer

A)   is not biological.
B)   can be measured by genetic differences.
C)   is due to feeding on different resources over an extended period of time.
D)   is due to mating with different individuals over an extended period of time.

Question 12

All of the following affect allele frequencies EXCEPT

Accepted Answer

A)   migration.
B)   mating.
C)   genetic shift.
D)   genetic drift.

Question 13

Define gene flow and describe the two main ways that it occurs. Your answer should include at least four definitions (yes, four).

Accepted Answer

Gene flow is the transfer of genetic mat...

Question 14

_____________ occurs when individuals seek out individuals with traits similar to their own or different from their own

Accepted Answer

A)   Inbreeding
B)   Outbreeding
C)   Assortative mating
D)   Genetic drift

Question 15

Epigenetic effects are developmental factors that

Accepted Answer

A)   occur inside the DNA.
B)   occur outside the DNA.
C)   occur inside and outside the DNA.
D)   result from hormonal fluctuations.

Question 16

New forms of life on this planet

Accepted Answer

A)   are not created anew.
B)   arise from previously existing forms.
C)   Both A and B are correct.
D)   Neither A nor B is correct.

Question 17

The expanded description of evolution put forward by scientists since Darwin's and Wallace's research is referred to as the

Accepted Answer

A)   new evolutionary theory.
B)   new synthesis.
C)   punctuated equilibrium theory.
D)   fitness fusion.

Question 18

A trait that is currently serving a function other than that for which it originally arose is called a(n)

Accepted Answer

A)   exaptation.
B)   adaptation.
C)   phenotypic variation.
D)   fitness trait.

Question 19

Morphological, temporal, geographic, and inferred ecological similarities are used when attempting to

Accepted Answer

A)   classify biological species.
B)   measure genetic variations between generations.
C)   decide whether two living organisms belong to the same or different species.
D)   decide whether two paleospecies' fossils belong to the same or different species.

Question 20

A subspecies is

Accepted Answer

A)   a population within a species that is not biologically distinct from other populations of that species and engages in little to no gene flow with other populations.
B)   a population within a species that is somehow biologically distinct from other populations of that species and engages in little to no gene flow with other populations.
C)   a population within a species that is somehow biologically distinct from other species and engages in little to no gene flow with other populations.
D)   a population within a species that is somehow biologically distinct from other populations of that species and engages in gene flow with other populations.

Exam 4: Modern Evolutionary Theory

_____________ occurs when individuals seek out mates within the same population but in a different group or subpopulation.

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Epigenetic effects are developmental factors that

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All of the following are descriptive of subspecies EXCEPT

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An evolutionary process in which a small group of individuals account for all of the genetic variation in a large population is called a(n)

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The distinctness of a subspecies

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New forms of life on this planet

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The expanded description of evolution put forward by scientists since Darwin's and Wallace's research is referred to as the

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Define gene flow and describe the two main ways that it occurs. Your answer should include at least four definitions (yes, four).

Correct AnswerAnswered by ExamLex AIGene flow is the transfer of genetic mat...View AnswerShow Answer

Define speciation and three ways that it occurs.

Correct AnswerAnswered by ExamLex AISpeciation is the process by which new s...View AnswerShow Answer

A trait that is currently serving a function other than that for which it originally arose is called a(n)

Correct AnswerverifiedShow Answer

Morphological, temporal, geographic, and inferred ecological similarities are used when attempting to

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_____________ selection favors the variation on a trait that occurs in the middle of the distribution.

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_____________ selection is bimodal; that is, it favors more than one form of the trait's variation, usually those at opposite ends of the spectrum.

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All of the following affect allele frequencies EXCEPT

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Novel genetic complexes arise only via

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A subspecies is

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If we measure frequencies of alleles and find that they have changed, then we would do all of the following EXCEPT

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Which of the following statements is false?

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_____________ occurs when individuals seek out individuals with traits similar to their own or different from their own

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_____________ is seen when species share phenotypic characteristics due to recent common ancestry.

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Gene flow is the transfer of genetic mat...
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Speciation is the process by which new s...
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