Question 1

The geologist who,in 1830,renewed the idea of uniformitarianism by showing that gradual changes in some organisms could be represented in successive fossil layers was

Accepted Answer

A)   James Hutton.
B)   Georges Buffon.
C)   Charles Darwin.
D)   Jean Lamarck.
E)   Charles Lyell.F) None of the above
G) B) and D)

Question 2

Darwin made which large set of observations while on his four-year voyage on the Beagle?

Accepted Answer

A)   More individuals of a population are born than survive to reproduce.
B)   An individual's chance of survival is random.
C)   Organisms are varied and some variations are inherited.
D)   Species do not appear to change over time.
E)   Populations grow constantly.F) A) and B)
G) A) and E)

Question 3

In 1785,the theory of uniformitarianism was proposed by

Accepted Answer

A)   James Hutton.
B)   Georges Cuvier.
C)   Charles Lyell.
D)   Charles Darwin.
E)   Georges Buffon.F) C) and E)
G) B) and D)

Question 4

The founder effect occurs when

Accepted Answer

A)   large groups of individuals leave their home population and establish new settlements, mating only among themselves.
B)   small groups of individuals leave their home population and establish new settlements, mating only among themselves.
C)   many members of a population die, resulting in a great loss of genetic diversity.
D)   many members of a population reproduce causing too much genetic diversity within the population.E) A) and D)
F) None of the above

Question 5

Babies that are at a low birth weight are more likely to have health problems,while women will have difficulty delivering babies with high birth weight.Together this leads to ______ for babies of average birth weight.

Accepted Answer

A)   artificial selection
B)   stabilizing selection
C)   sexual selection
D)   directional selection
E)   disruptive selectionF) A) and B)
G) C) and D)

Question 6

Darwin believed that because of "differential reproductive success" a population would change over time.

Accepted Answer

A) True 
 B)False

Question 7

In the Hardy-Weinberg equation,p2 + 2pq + q2 = 1: 2pq represents the frequency of

Accepted Answer

A)   homozygous recessive and heterozygous individuals.
B)   homozygous dominant individuals.
C)   homozygous recessive individuals.
D)   heterozygous individuals.
E)   homozygous dominant and heterozygous individuals.F) B) and C)
G) All of the above

Question 8

The French taxonomist,who in 1809,proposed the first testable evolutionary theory,that organisms using body parts repeatedly would increase their abilities,was

Accepted Answer

A)   Georges-Louis Buffon.
B)   James Hutton.
C)   Charles Lyell.
D)   Charles Darwin.
E)   Jean Baptiste Lamarck.F) A) and B)
G) A) and C)

Question 9

Natural selection acts on

Accepted Answer

A)   alleles.
B)   genotypes.
C)   populations.
D)   individuals.
E)   communities.F) A) and D)
G) B) and E)

Question 10

The mode of natural selection in which one extreme phenotype is fittest and the environment selects against the others is

Accepted Answer

A)   directional selection.
B)   stabilizing selection.
C)   artificial selection.
D)   convergent selection.
E)   disruptive selection.F) A) and E)
G) B) and C)

Question 11

The mode of natural selection in which extreme phenotypes are less fit than the optimal intermediate phenotype is

Accepted Answer

A)   convergent selection.
B)   directive selection.
C)   stabilizing selection.
D)   disruptive selection.
E)   artificial selection.F) C) and D)
G) B) and C)

Question 12

Farmers and horticulturalists have bred broccoli,cauliflower,kale,and cabbage from the wild mustard plant through

Accepted Answer

A)   artificial selection.
B)   natural selection.
C)   evolution.
D)   sexual selection.
E)   genetic drift.F) A) and E)
G) A) and C)

Question 13

Nonrandom mating,gene flow,and genetic drift are mechanisms of microevolution.

Accepted Answer

A) True 
 B)False

Question 14

Ancestors of giraffes with shorter necks could not reach branches high up in trees for food.This led to ____ for longer necked giraffes.

Accepted Answer

A)   directional selection
B)   disruptive selection
C)   stabilizing selection
D)   sexual selection
E)   artificial selectionF) All of the above
G) B) and D)

Question 15

In the Hardy-Weinberg equation,p2 + 2pq + q2 = 1.If the dominant allele frequency is 0.8,what percent of the population will be homozygous dominant?

Accepted Answer

A)   0.16
B)   0.64
C)   0.32
D)   0.04
E)   0.40F) C) and E)
G) All of the above

Question 16

Convergent evolution means that

Accepted Answer

A)   organisms living in similar habitats may develop similar traits even though they are not closely related.
B)   evolution converges on a desired body form based on an external plan or design.
C)   different organisms will never have similar traits.
D)   all species will eventually have the same traits.
E)   some life-forms are more evolved and therefore superior to other life-forms.F) A) and E)
G) All of the above

Question 17

In Africa and other parts of the world,malaria parasites can cause deadly illness.Sickle cell anemia,and other varied alleles in the production of hemoglobin,can produce a resistance to parasite growth.In these cases,individuals whose red blood cells break down more rapidly have a better chance of reaching reproductive age,in a form of balanced polymorphism.This is known as

Accepted Answer

A)   heterozygote disadvantage.
B)   pleiotropy.
C)   heterozygote advantage.
D)   homozygote advantage.
E)   polygenic inheritance.F) A) and D)
G) A) and B)

Question 18

Figuer:  
-In figure (a) ,what was the dependent variable?

Accepted Answer

A)   the mean weight of harvested fish
B)   the species of fish
C)   the size at which the fish were harvested
D)   the age of the fish
E)   the generationF) C) and E)
G) B) and C)

Question 19

A sharp contrast between balanced polymorphism and the three types of natural selection is that in balanced polymorphism,

Accepted Answer

A)   polygenic traits in a population may mask the observation of extreme or intermediate phenotypes.
B)   Not only are multiple alleles persistent in a population, but they may preserve positive, neutral, and negative phenotypes.
C)   multiple alleles of a gene persist indefinitely in a population.
D)   many traits persist in a population that are controlled by only a single allele.
E)   positive, neutral, and negative phenotypes may be preserved in a population.F) A) and D)
G) A) and C)

Question 20

The bottleneck effect occurs when

Accepted Answer

A)   small groups of individuals leave their home population and establish new settlements, mating only among themselves.
B)   many members of a population die, resulting in a great loss of genetic diversity.
C)   many members of a population reproduce causing too much genetic diversity within the population.
D)   large groups of individuals leave their home population and establish new settlements, mating only among themselves.E) All of the above
F) A) and D)

Exam 12: The Forces of Evolutionary Change

Babies that are at a low birth weight are more likely to have health problems,while women will have difficulty delivering babies with high birth weight.Together this leads to ______ for babies of average birth weight.

Correct Answer
verified

Farmers and horticulturalists have bred broccoli,cauliflower,kale,and cabbage from the wild mustard plant through

Correct Answer
verified

Darwin made which large set of observations while on his four-year voyage on the Beagle?

Correct Answer
verified

The French taxonomist,who in 1809,proposed the first testable evolutionary theory,that organisms using body parts repeatedly would increase their abilities,was

Correct Answer
verified

Darwin believed that because of "differential reproductive success" a population would change over time.

Correct Answer
verified

Ancestors of giraffes with shorter necks could not reach branches high up in trees for food.This led to ____ for longer necked giraffes.

Correct Answer
verified

In the Hardy-Weinberg equation,p² + 2pq + q² = 1: 2pq represents the frequency of

Correct Answer
verified

In the Hardy-Weinberg equation,p² + 2pq + q² = 1.If the dominant allele frequency is 0.8,what percent of the population will be homozygous dominant?

Correct Answer
verified

Nonrandom mating,gene flow,and genetic drift are mechanisms of microevolution.

Correct Answer
verified

Convergent evolution means that

Correct Answer
verified

The geologist who,in 1830,renewed the idea of uniformitarianism by showing that gradual changes in some organisms could be represented in successive fossil layers was

Correct Answer
verified

The mode of natural selection in which extreme phenotypes are less fit than the optimal intermediate phenotype is

Correct Answer
verified

Natural selection acts on

Correct Answer
verified

Figuer: -In figure (a) ,what was the dependent variable?

Correct Answer
verified

The bottleneck effect occurs when

Correct Answer
verified

The mode of natural selection in which one extreme phenotype is fittest and the environment selects against the others is

Correct Answer
verified

Correct Answer
verified

In 1785,the theory of uniformitarianism was proposed by

Correct Answer
verified

The founder effect occurs when

Correct Answer
verified

A sharp contrast between balanced polymorphism and the three types of natural selection is that in balanced polymorphism,

Correct Answer
verified

Exam 12: The Forces of Evolutionary Change

Babies that are at a low birth weight are more likely to have health problems,while women will have difficulty delivering babies with high birth weight.Together this leads to ______ for babies of average birth weight.

Correct AnswerverifiedShow Answer

Farmers and horticulturalists have bred broccoli,cauliflower,kale,and cabbage from the wild mustard plant through

Correct AnswerverifiedShow Answer

Darwin made which large set of observations while on his four-year voyage on the Beagle?

Correct AnswerverifiedShow Answer

The French taxonomist,who in 1809,proposed the first testable evolutionary theory,that organisms using body parts repeatedly would increase their abilities,was

Correct AnswerverifiedShow Answer

Darwin believed that because of "differential reproductive success" a population would change over time.

Correct AnswerverifiedShow Answer

Ancestors of giraffes with shorter necks could not reach branches high up in trees for food.This led to ____ for longer necked giraffes.

Correct AnswerverifiedShow Answer

In the Hardy-Weinberg equation,p2 + 2pq + q2 = 1: 2pq represents the frequency of

Correct AnswerverifiedShow Answer

In the Hardy-Weinberg equation,p2 + 2pq + q2 = 1.If the dominant allele frequency is 0.8,what percent of the population will be homozygous dominant?

Correct AnswerverifiedShow Answer

Nonrandom mating,gene flow,and genetic drift are mechanisms of microevolution.

Correct AnswerverifiedShow Answer

Convergent evolution means that

Correct AnswerverifiedShow Answer

The geologist who,in 1830,renewed the idea of uniformitarianism by showing that gradual changes in some organisms could be represented in successive fossil layers was

Correct AnswerverifiedShow Answer

The mode of natural selection in which extreme phenotypes are less fit than the optimal intermediate phenotype is

Correct AnswerverifiedShow Answer

Natural selection acts on

Correct AnswerverifiedShow Answer

Figuer: -In figure (a) ,what was the dependent variable?

Correct AnswerverifiedShow Answer

The bottleneck effect occurs when

Correct AnswerverifiedShow Answer

The mode of natural selection in which one extreme phenotype is fittest and the environment selects against the others is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In 1785,the theory of uniformitarianism was proposed by

Correct AnswerverifiedShow Answer

The founder effect occurs when

Correct AnswerverifiedShow Answer

A sharp contrast between balanced polymorphism and the three types of natural selection is that in balanced polymorphism,

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

In the Hardy-Weinberg equation,p² + 2pq + q² = 1: 2pq represents the frequency of

Correct Answer
verified

In the Hardy-Weinberg equation,p² + 2pq + q² = 1.If the dominant allele frequency is 0.8,what percent of the population will be homozygous dominant?

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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