Question 1

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

Accepted Answer

A)   0.32
B)   0.16
C)   0.40
D)   0.04
E)   0.64F) C) and D)
G) A) and E)

Question 2

The mode of natural selection in which two or more extreme phenotypes are fitter than the intermediate phenotype is

Accepted Answer

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

Question 3

The North American bison was hunted to near extinction in the 1800s,and has since recovered,but with decreased genetic diversity.This is an example of

Accepted Answer

A)   a bottleneck.
B)   founder effect.
C)   natural selection.
D)   increased mutation rate.
E)   gene flow.F) A) and B)
G) C) and E)

Question 4

Alleles conferring red plumage to male cardinals are common because red plumage

Accepted Answer

A)   allows male cardinals to easily identify each other.
B)   is helpful in attracting prey.
C)   makes males less susceptible to predation.
D)   is an example of genetic drift.
E)   is preferred by female cardinals in choosing a mate.F) All of the above
G) A) and B)

Question 5

Malthus' ideas on population resource limits,was incorporated by Darwin as the summary that natural selection

Accepted Answer

A)   preserves favorable variations and rejects harmful variations in a population.
B)   preserves harmful variations and rejects favorable variations in a population.
C)   preserves favorable and harmful variations in a population.
D)   neither preserves nor rejects harmful variations in a population.E) B) and D)
F) A) and B)

Question 6

Darwin read which of the following in the Essay on the Principle of Population by Malthus?

Accepted Answer

A)   Organisms are varied and some variations are inherited.
B)   An individual's chance of survival is random.
C)   More individuals of a population are born than survive to reproduce.
D)   Species do not change over time.
E)   Populations grow constantly.F) None of the above
G) A) and B)

Question 7

Since the conditions needed for the Hardy-Weinberg principle do not occur in real populations,this principle has no importance in population studies.

Accepted Answer

A) True 
 B)False

Question 8

At Hardy-Weinberg equilibrium,

Accepted Answer

A)   allele frequencies remain constant from one generation to the next.
B)   evolution does not occur.
C)   allele frequencies change from one generation to the next so evolution does not occur.
D)   allele frequencies change from one generation to the next.
E)   allele frequencies remain constant from one generation to the next so evolution does not occur.F) A) and D)
G) All of the above

Question 9

The entire collection of genes and their alleles is a population's

Accepted Answer

A)   recessive traits.
B)   phenotype.
C)   genotype.
D)   dominant traits.
E)   gene pool.F) C) and E)
G) None of the above

Question 10

Figuer:  
-The heritability of body size is 0.2 in Atlantic silversides.What would happen in figure (b) if this heritability was 0.8?

Accepted Answer

A)   The changes in average size would occur more slowly.
B)   The changes in average size would occur more rapidly.
C)   The fish would never get as large under the same environmental conditions.
D)   No changes in average size would occur.
E)   The fish would avoid predation.F) A) and D)
G) A) and E)

Exam 12: The Forces of Evolutionary Change

The mode of natural selection in which two or more extreme phenotypes are fitter than the intermediate phenotype is

Correct Answer
verified

The entire collection of genes and their alleles is a population's

Correct Answer
verified

Figuer: -The heritability of body size is 0.2 in Atlantic silversides.What would happen in figure (b) if this heritability was 0.8?

Correct Answer
verified

Alleles conferring red plumage to male cardinals are common because red plumage

Correct Answer
verified

Malthus' ideas on population resource limits,was incorporated by Darwin as the summary that natural selection

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 heterozygous?

Correct Answer
verified

The North American bison was hunted to near extinction in the 1800s,and has since recovered,but with decreased genetic diversity.This is an example of

Correct Answer
verified

Since the conditions needed for the Hardy-Weinberg principle do not occur in real populations,this principle has no importance in population studies.

Correct Answer
verified

At Hardy-Weinberg equilibrium,

Correct Answer
verified

Darwin read which of the following in the Essay on the Principle of Population by Malthus?

Correct Answer
verified

Exam 12: The Forces of Evolutionary Change

The mode of natural selection in which two or more extreme phenotypes are fitter than the intermediate phenotype is

Correct AnswerverifiedShow Answer

The entire collection of genes and their alleles is a population's

Correct AnswerverifiedShow Answer

Figuer: -The heritability of body size is 0.2 in Atlantic silversides.What would happen in figure (b) if this heritability was 0.8?

Correct AnswerverifiedShow Answer

Alleles conferring red plumage to male cardinals are common because red plumage

Correct AnswerverifiedShow Answer

Malthus' ideas on population resource limits,was incorporated by Darwin as the summary that natural selection

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 heterozygous?

Correct AnswerverifiedShow Answer

The North American bison was hunted to near extinction in the 1800s,and has since recovered,but with decreased genetic diversity.This is an example of

Correct AnswerverifiedShow Answer

Since the conditions needed for the Hardy-Weinberg principle do not occur in real populations,this principle has no importance in population studies.

Correct AnswerverifiedShow Answer

At Hardy-Weinberg equilibrium,

Correct AnswerverifiedShow Answer

Darwin read which of the following in the Essay on the Principle of Population by Malthus?

Correct AnswerverifiedShow Answer

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified