Question 1

Define speciation and three ways that it occurs.

Accepted Answer

Speciation is the process by which new s...

Question 2

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 3

Novel genetic complexes arise only via

Accepted Answer

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

Question 4

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 5

_____________ 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 6

_____________ 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 7

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 8

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 9

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 10

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.

Question 11

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 12

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 13

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 14

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 15

_____________ 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 16

_____________ 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 17

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 18

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 19

All of the following affect allele frequencies EXCEPT

Accepted Answer

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

Question 20

_____________ 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

Exam 4: Modern Evolutionary Theory

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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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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Epigenetic effects are developmental factors that

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

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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

A subspecies is

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All of the following are descriptive of subspecies EXCEPT

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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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All of the following affect allele frequencies EXCEPT

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

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Novel genetic complexes arise only via

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

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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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New forms of life on this planet

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

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

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Which of the following statements is false?

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The distinctness of a subspecies

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Define speciation and three ways that it occurs.

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

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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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