Question 1

In human infants,there has long been evolution toward having the highest survival rate at a 6-7 pound birth weight.This is an example of:

Accepted Answer

A)   directional selection
B)   disruptive selection
C)   stabilizing or balancing selection
D)   random chanceE) All of the above
F) A) and B)

Question 2

Darwin's finches,and the studies by the Grants finally proved that:

Accepted Answer

A)   beak size adjusted within a given year depending on nutrition status
B)   differences in beak size were the result of natural selection and were inherited
C)   beak sizes were completely random and no pattern was determined
D)   beak sizes made no difference as to the food being eatenE) B) and C)
F) C) and D)

Question 3

Bats,pterosaurs,and birds are examples of _________ evolution.

Accepted Answer

The answer of Bats,pterosaurs,and birds are examples of _________ evolution....

Question 4

In small populations,gene frequencies can change drastically by chance alone.This phenomenon is called:

Accepted Answer

A)   migration
B)   density-independent effects
C)   density-dependent effects
D)   genetic driftE) A) and D)
F) A) and C)

Question 5

A __________ is a separate group of organisms incapable of interbreeding with other such groups.

Accepted Answer

The answer of A __________ is a separate group of...

Question 6

In a certain population,the frequency of a dominant allele is represented by p = 0.7,and the frequency of the recessive allele is represented by 0.3.What is the frequency of the heterozygous genotype?

Accepted Answer

A)   1
B)   0.5
C)   0.42
D)   0.01E) None of the above
F) A) and B)

Question 7

All of the following are examples of vestigial structures except:

Accepted Answer

A)   human gall bladder
B)   pelvis in a whale
C)   appendix in humans
D)   All of these are vestigial.E) None of the above
F) A) and B)

Question 8

Give two examples of nonrandom mating.

Accepted Answer

Mating with relative...

Question 9

In pools below waterfalls,where predation is _____,male guppies are _____,whereas in pools above waterfalls where predation is ______,male guppies are ______.

Accepted Answer

A)   low,more colorful,high,drab colored
B)   low,drab colored,high,more colorful
C)   high,drab colored,low,more colorful
D)   high,more colorful,low,drab coloredE) None of the above
F) All of the above

Question 10

Choose the phrase that best represents microevolutionary change.

Accepted Answer

A)   Darker skin after hours spent in a tanning booth
B)   Changes in allele frequency in a population
C)   New forms of animals replacing older ones
D)   Major episodes of extinctionE) B) and C)
F) C) and D)

Question 11

If two species of plants bloom during different seasons in the same habitat,this is known as:

Accepted Answer

A)   mechanical isolation
B)   temporal isolation
C)   ecological isolation
D)   geographical isolation
E)   behavioral isolationF) A) and B)
G) D) and E)

Question 12

__________________ isolating mechanisms lead to reproductive isolation by preventing the formation of hybrid zygotes.

Accepted Answer

The answer of __________________ isolating mechanisms lead to reproductive isolation...

Question 13

Sickle-cell anemia in humans is an example of:

Accepted Answer

A)   directional selection
B)   disruptive selection
C)   stabilizing or balancing selection
D)   random chanceE) A) and C)
F) None of the above

Question 14

Darwin better understood the mechanism for natural selection after he read a book by ______________ on the rate of growth of populations.

Accepted Answer

A)   Alfred Wallace
B)   Charles Lyell
C)   Thomas Malthus
D)   Jean LamarckE) All of the above
F) A) and B)

Question 15

A human example of stabilizing selection is _____________________.

Accepted Answer

sickle-cel...

Question 16

Most types of organisms evolve at about the same rate.

Accepted Answer

A) True 
 B)False

Question 17

Much of the evolutionary history of vertebrates can be seen in the way in which their ________ develop.

Accepted Answer

A)   digestive tracts
B)   embryos
C)   brains
D)   appendages
E)   nervous systemsF) A) and B)
G) B) and C)

Question 18

Choose the phrase that best represents macroevolutionary change.

Accepted Answer

A)   Darker skin after hours spent in a tanning booth
B)   Changes in allele frequency in a population
C)   New forms of animals replacing older ones
D)   Major episodes of extinctionE) None of the above
F) A) and C)

Question 19

The bones of vertebrate forelimbs are similar because of descent from a common ancestor.These forelimbs can be called __________________ structures.

Accepted Answer

The answer of The bones of vertebrate forelimbs are similar...

Question 20

Give an example of behavioral isolation.

Accepted Answer

Answers will vary,but the text describes...

Exam 14: Evolution and Natural Selection

All of the following are examples of vestigial structures except:

Correct AnswerverifiedShow Answer

Darwin's finches,and the studies by the Grants finally proved that:

Correct AnswerverifiedShow Answer

In a certain population,the frequency of a dominant allele is represented by p = 0.7,and the frequency of the recessive allele is represented by 0.3.What is the frequency of the heterozygous genotype?

Correct AnswerverifiedShow Answer

Choose the phrase that best represents microevolutionary change.

Correct AnswerverifiedShow Answer

A human example of stabilizing selection is _____________________.

Correct Answerverifiedsickle-cel...View AnswerShow Answer

Bats,pterosaurs,and birds are examples of _________ evolution.

Correct AnswerverifiedShow Answer

Give two examples of nonrandom mating.

Correct AnswerverifiedMating with relative...View AnswerShow Answer

Much of the evolutionary history of vertebrates can be seen in the way in which their ________ develop.

Correct AnswerverifiedShow Answer

In human infants,there has long been evolution toward having the highest survival rate at a 6-7 pound birth weight.This is an example of:

Correct AnswerverifiedShow Answer

Darwin better understood the mechanism for natural selection after he read a book by ______________ on the rate of growth of populations.

Correct AnswerverifiedShow Answer

In small populations,gene frequencies can change drastically by chance alone.This phenomenon is called:

Correct AnswerverifiedShow Answer

A __________ is a separate group of organisms incapable of interbreeding with other such groups.

Correct AnswerverifiedShow Answer

The bones of vertebrate forelimbs are similar because of descent from a common ancestor.These forelimbs can be called __________________ structures.

Correct AnswerverifiedShow Answer

In pools below waterfalls,where predation is _____,male guppies are _____,whereas in pools above waterfalls where predation is ______,male guppies are ______.

Correct AnswerverifiedShow Answer

If two species of plants bloom during different seasons in the same habitat,this is known as:

Correct AnswerverifiedShow Answer

Sickle-cell anemia in humans is an example of:

Correct AnswerverifiedShow Answer

Give an example of behavioral isolation.

Correct AnswerverifiedAnswers will vary,but the text describes...View AnswerShow Answer

Most types of organisms evolve at about the same rate.

Correct AnswerverifiedShow Answer

Choose the phrase that best represents macroevolutionary change.

Correct AnswerverifiedShow Answer

__________________ isolating mechanisms lead to reproductive isolation by preventing the formation of hybrid zygotes.

Correct AnswerverifiedShow Answer

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sickle-cel...
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Mating with relative...
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In pools below waterfalls,where predation is ___,male guppies are _,whereas in pools above waterfalls where predation is ,male guppies are __.

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Correct Answer
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Correct Answer
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Answers will vary,but the text describes...
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Correct Answer
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Correct Answer
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