Question 1

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 2

At Hardy-Weinberg equilibrium,allele frequencies

Accepted Answer

A)   change from one generation to the next so evolution occurs.
B)   remain constant from one generation to the next so evolution occurs.
C)   change from one generation to the next so evolution does not occur.
D)   remain constant from one generation to the next so evolution does not occur.
E)   None of the answers are correct.

Question 3

Natural selection is a random process.

Accepted Answer

A) True 
 B)False

Question 4

In 1749,________,a French naturalist,became one of the first scientists to suggest that closely related species arose from a common ancestor.

Accepted Answer

A)   Charles Darwin
B)   Georges Buffon
C)   James Hutton
D)   Georges Cuvier
E)   Charles Lyell

Question 5

Evolution must include a change in

Accepted Answer

A)   the gene pool of a population.
B)   the genes of an individual.
C)   the dominant phenotype.
D)   the recessive phenotype.
E)   the percentage of individuals in a population with the dominant phenotype.

Question 6

If you were going to apply the principles of Darwin to business,you would allow employees to submit a wide range of ideas and then test many,keeping the winners because in evolution,natural selection

Accepted Answer

A)   neither preserves nor 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)   preserves favorable variations and rejects harmful variations in a population.
E)   No answer is correct.

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

A)   the founder effect.
B)   the bottleneck effect.
C)   natural selection.
D)   increased mutation rate.
E)   artificial selection.

Question 9

The three types of natural selection are

Accepted Answer

A)   directional selection, artificial selection, and disruptive selection.
B)   directional selection, artificial selection, and normalizing selection.
C)   disruptive selection, stabilizing selection, and normalizing selection.
D)   disruptive selection, stabilizing selection, and artificial selection.
E)   directional selection, disruptive selection, and stabilizing selection.

Question 10

If an environment changes rapidly,organisms with ________ will be more likely to survive and reproduce.

Accepted Answer

A)   existing beneficial mutations
B)   existing neutral mutations
C)   the ability to produce beneficial mutations
D)   the ability to adapt their genotype
E)   All the answer choices are correct.

Question 11

The frequency of the sickle cell allele is kept up by the heterozygote advantage under natural selection.

Accepted Answer

A) True 
 B)False

Question 12

In 1809,________,a French taxonomist,suggested that organisms that use one part of their body repeatedly would increase their abilities.

Accepted Answer

A)   Charles Darwin
B)   Alfred Russel Wallace
C)   Jean Lamarck
D)   Georges Buffon
E)   Charles Lyell

Question 13

You observe that red sea turtles have become more common over time in a previously all-green population.You attribute the change to a selective advantage for the red phenotype,leading to a change in allele frequency.

Accepted Answer

A) True 
 B)False

Question 14

In the Hardy-Weinberg equation,p + q = 1,p and q represent the frequency of alleles in a population of diploid organisms if

Accepted Answer

A)   two or more alleles exist for that gene.
B)   two or more genes are needed to express a trait.
C)   only two alleles exist for that gene.
D)   the trait is polygenic.
E)   only one allele exists for that gene.

Question 15

The observable properties of genes is an organism's

Accepted Answer

A)   genotype.
B)   phenotype.
C)   allele frequency.
D)   gene pool.
E)   macroevolution.

Question 16

Sexually dimorphic features do not include

Accepted Answer

A)   colored plumage.
B)   intelligence.
C)   antlers.
D)   body size.
E)   horns.

Question 17

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)   stabilizing selection
B)   disruptive selection
C)   directional selection
D)   artificial selection
E)   sexual selection

Question 18

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

Accepted Answer

A)   homozygous recessive individuals.
B)   homozygous dominant individuals.
C)   heterozygous individuals.
D)   homozygous recessive and heterozygous individuals.
E)   homozygous dominant and heterozygous individuals.

Question 19

Who authored the book On the Origin of Species by Means of Natural Selection?

Accepted Answer

A)   Alfred Russel Wallace
B)   Jean Lamarck
C)   Georges Buffon
D)   Charles Darwin
E)   Charles Lyell

Question 20

The geologist who suggested that natural processes are slow and steady and that the Earth is much older than 6,000 years was

Accepted Answer

A)   Charles Darwin.
B)   Charles Lyell.
C)   Alfred Russel Wallace.
D)   Jean Lamarck.
E)   Georges Buffon.

Exam 12: Forces of Evolutionary Change

The frequency of the sickle cell allele is kept up by the heterozygote advantage under natural selection.

Correct AnswerverifiedShow Answer

Who authored the book On the Origin of Species by Means of Natural Selection?

Correct AnswerverifiedShow Answer

In 1809,________,a French taxonomist,suggested that organisms that use one part of their body repeatedly would increase their abilities.

Correct AnswerverifiedShow Answer

The observable properties of genes is an organism's

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

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

Correct AnswerverifiedShow Answer

The three types of natural selection are

Correct AnswerverifiedShow Answer

If you were going to apply the principles of Darwin to business,you would allow employees to submit a wide range of ideas and then test many,keeping the winners because in evolution,natural selection

Correct AnswerverifiedShow Answer

Natural selection is a random process.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

If an environment changes rapidly,organisms with ________ will be more likely to survive and reproduce.

Correct AnswerverifiedShow Answer

In the Hardy-Weinberg equation,p + q = 1,p and q represent the frequency of alleles in a population of diploid organisms if

Correct AnswerverifiedShow Answer

The geologist who suggested that natural processes are slow and steady and that the Earth is much older than 6,000 years was

Correct AnswerverifiedShow Answer

Evolution must include a change in

Correct AnswerverifiedShow Answer

Sexually dimorphic features do not include

Correct AnswerverifiedShow Answer

In 1749,________,a French naturalist,became one of the first scientists to suggest that closely related species arose from a common ancestor.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

You observe that red sea turtles have become more common over time in a previously all-green population.You attribute the change to a selective advantage for the red phenotype,leading to a change in allele frequency.

Correct AnswerverifiedShow Answer

At Hardy-Weinberg equilibrium,allele frequencies

Correct AnswerverifiedShow Answer

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

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