Question 1

The age of the earth is estimated to be about

Accepted Answer

A)   1 million years old.
B)   4 million years old.
C)   1 billion years old.
D)   2.5 billion years old.
E)   4.6 billion years old.F) B) and C)
G) None of the above

Question 2

According to the Hardy-Weinberg equilibrium,in a population in which 1% does NOT have freckles (recessive) ,what percentage of the next population is likely to NOT have freckles?

Accepted Answer

A)   None since it is a recessive condition.
B)   1%
C)   2%
D)   50%
E)   99%F) A) and B)
G) A) and E)

Question 3

Homologous structures such as the bones in wings,flippers,and arms are most closely concerned with

Accepted Answer

A)   comparative anatomy.
B)   biogeography.
C)   the fossil record.
D)   comparative embryology.
E)   comparative biochemistry.F) A) and B)
G) A) and C)

Question 4

Which pairing of occurrence and date is NOT correct?

Accepted Answer

A)   origin of invertebrates-630 million years ago
B)   origin of life-4.6 billion years ago
C)   origin of eukaryotic cells-2.1 billion years ago
D)   origin of prokaryotic cells-3.5 billion years ago
E)   chordate evolution-545 million years agoF) A) and E)
G) A) and B)

Question 5

The observation by ________ that human reproductive potential would rapidly outstrip available food and living space was an important concept adopted by Darwin in formulating his theory of natural selection.

Accepted Answer

A)   Stanley Miller
B)   Graham Cairns-Smith
C)   Thomas Malthus
D)   Aleksandr Oparin
E)   Sidney FoxF) A) and E)
G) A) and B)

Question 6

Which of the following agents of evolutionary change results in adaptation?

Accepted Answer

A)   mutation
B)   genetic drift
C)   gene flow
D)   nonrandom mating
E)   natural selectionF) B) and C)
G) B) and E)

Question 7

In comparing the number of differences in amino acids for cytochrome c: between a moth and a rattlesnake there are 31 different amino acids in the sequence,between a moth and a dog there are only 25,and there are 6 differences between a dog and a horse.Therefore,

Accepted Answer

A)   this is sufficient evidence to prove the moth is closer related to the dog than to the horse.
B)   dogs had to evolve earlier than horses, since moths are more primitive.
C)   evolution used to be considered a unifying theory until biochemical data showed only differences.
D)   added to anatomical similarities and fossil records, this provides additional evidence for constructing a phylogeny or family tree.
E)   biochemical information is not relevant to the evolution of organisms.F) B) and C)
G) B) and E)

Question 8

According to the evolutionary theory,which statement is NOT true?

Accepted Answer

A)   Evolution explains the unity of life.
B)   Evolution explains the diversity of life.
C)   All living things are NOT descended from a common ancestor.
D)   Diversity occurs because various living things are adapted to different ways of life.
E)   All living things share the same fundamental characteristics.F) B) and D)
G) A) and B)

Question 9

The earliest forms of life on earth are found in rocks that are estimated to be

Accepted Answer

A)   1 million years old.
B)   4 million years old.
C)   1 billion years old.
D)   3.5 billion years old.
E)   4.6 billion years old.F) C) and D)
G) B) and D) D

Question 10

Which statement is NOT true about nonrandom mating?

Accepted Answer

A)   Inbreeding is mating between relatives more often than by chance.
B)   Inbreeding is a change in allele frequencies that increases the proportion of heterozygotes in the population.
C)   An example is when a tall man marries a tall woman.
D)   Nonrandom mating tends to cause subdivision into two phenotypic classes with reduced gene flow between them.
E)   An example is when the strongest male wins the opportunity to mate with his choice of females.F) B) and C)
G) A) and C)

Question 11

The organisms examined by Darwin on the Galapagos Islands that were most important in his development of the theory of natural selection were

Accepted Answer

A)   rabbits and hares.
B)   plants.
C)   finches.
D)   fish.
E)   monkeys and armadillos.F) B) and D)
G) None of the above

Question 12

What evidence would NOT be studied by a biogeographer?

Accepted Answer

A)   continental drift or the movement of tectonic plates over time
B)   amount of genetic similarity among current populations
C)   ocean currents and wind patterns
D)   ranges of animals and ability to migrate
E)   the genetic makeup of different but related organismsF) A) and D)
G) A) and E)

Question 13

The new model of evolution that proposes that organisms spend most of their time in fairly unchanging form and undergo occasional bursts of speciation is called

Accepted Answer

A)   genetic drift.
B)   phyletic gradualism.
C)   sympatric speciation.
D)   punctuated equilibrium.
E)   the biological species concept.F) A) and E)
G) A) and B)

Question 14

If there is a change in the allele frequency of a gene pool due to chance,primarily in a small population,it is termed

Accepted Answer

A)   mutations.
B)   genetic drift.
C)   gene flow.
D)   nonrandom mating.
E)   natural selection.F) B) and D)
G) D) and E) B

Question 15

Which of the following is true about natural selection?

Accepted Answer

A)   It acts on genotypes rather than phenotypes.
B)   It assures the survival of each fit individual.
C)   On average, it favors the survival of young with adaptive characteristics.
D)   It always selects for more complex forms.
E)   It always selects for forms that are a mutated variation.F) A) and B)
G) A) and E)

Question 16

Which fossil evidence is considered an intermediate between reptiles and birds?

Accepted Answer

A)   Archaeopteryx
B)   Eusthenopteron
C)   Seymouria
D)   synapsids
E)   therapodsF) B) and D)
G) A) and E)

Question 17

The three domain system is primarily based on

Accepted Answer

A)   molecular data showing eukaryotes are much more closely related than previously thought.
B)   structural data showing prokaryotes are far more diverse than previously thought.
C)   molecular data showing prokaryotes are far more diverse than previously thought.
D)   new biogeographical data showing prokaryotes are far more diverse than previously thought.
E)   new classification concepts that have shown everything except molecular data to be irrelevant.F) C) and E)
G) A) and E)

Question 18

Which of the following mechanisms does NOT result in variation in the gene frequencies from the ancestral population?

Accepted Answer

A)   founder effect
B)   differential reproduction
C)   recombination of alleles
D)   genetic drift
E)   natural selectionF) A) and C)
G) C) and E)

Question 19

You are traveling across the Pacific Ocean when you come across a small island,island #1.There is lush vegetation and several species of beetles that vary in the color of their carapace.The colors you find are green,blue,purple,and black.A second island 200 miles closer to the mainland (island #2) is mostly sand with some palm trees and has a single species of beetle that has a brown carapace.You examine the colored beetles and discover that they are all related and that they are related to the brown species on the second island.Which of the following is the most likely scenario?

Accepted Answer

A)   The brown beetle migrated to island #1 and gave rise to the colored species on island #2 through adaptive radiation.
B)   The colored species of beetle on island #1 migrated to island #2 and gave rise to the brown beetle through extinction.
C)   The brown beetle evolved from the colored beetles on island #1 and then migrated to island #2.
D)   The brown beetle gave rise to all of the colored beetles on island #2 which then migrated to island #1.
E)   A beetle of some undetermined color gave rise to all of the colors of beetle brown, green, purple, and black and they then migrated to different islands.F) All of the above
G) D) and E) A

Question 20

Lamarck's theory of evolution included the idea that

Accepted Answer

A)   the continual stretching of giraffe's necks to reach leaves led to longer necks.
B)   local catastrophes cause mass extinctions of species.
C)   species are only produced through special creation.
D)   species are fixed and unchanging over time.
E)   organisms are acted on by the environment.F) A) and D)
G) B) and D)

Exam 27: Evolution of Life

The age of the earth is estimated to be about

Correct Answer
verified

According to the Hardy-Weinberg equilibrium,in a population in which 1% does NOT have freckles (recessive) ,what percentage of the next population is likely to NOT have freckles?

Correct Answer
verified

Homologous structures such as the bones in wings,flippers,and arms are most closely concerned with

Correct Answer
verified

Which pairing of occurrence and date is NOT correct?

Correct Answer
verified

The observation by ________ that human reproductive potential would rapidly outstrip available food and living space was an important concept adopted by Darwin in formulating his theory of natural selection.

Correct Answer
verified

Which of the following agents of evolutionary change results in adaptation?

Correct Answer
verified

In comparing the number of differences in amino acids for cytochrome c: between a moth and a rattlesnake there are 31 different amino acids in the sequence,between a moth and a dog there are only 25,and there are 6 differences between a dog and a horse.Therefore,

Correct Answer
verified

According to the evolutionary theory,which statement is NOT true?

Correct Answer
verified

The earliest forms of life on earth are found in rocks that are estimated to be

Correct Answer
verified
D

Which statement is NOT true about nonrandom mating?

Correct Answer
verified

The organisms examined by Darwin on the Galapagos Islands that were most important in his development of the theory of natural selection were

Correct Answer
verified

What evidence would NOT be studied by a biogeographer?

Correct Answer
verified

The new model of evolution that proposes that organisms spend most of their time in fairly unchanging form and undergo occasional bursts of speciation is called

Correct Answer
verified

If there is a change in the allele frequency of a gene pool due to chance,primarily in a small population,it is termed

Correct Answer
verified
B

Which of the following is true about natural selection?

Correct Answer
verified

Which fossil evidence is considered an intermediate between reptiles and birds?

Correct Answer
verified

The three domain system is primarily based on

Correct Answer
verified

Which of the following mechanisms does NOT result in variation in the gene frequencies from the ancestral population?

Correct Answer
verified

Correct Answer
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A

Lamarck's theory of evolution included the idea that

Correct Answer
verified

Exam 27: Evolution of Life

The age of the earth is estimated to be about

Correct AnswerverifiedShow Answer

According to the Hardy-Weinberg equilibrium,in a population in which 1% does NOT have freckles (recessive) ,what percentage of the next population is likely to NOT have freckles?

Correct AnswerverifiedShow Answer

Homologous structures such as the bones in wings,flippers,and arms are most closely concerned with

Correct AnswerverifiedShow Answer

Which pairing of occurrence and date is NOT correct?

Correct AnswerverifiedShow Answer

The observation by ________ that human reproductive potential would rapidly outstrip available food and living space was an important concept adopted by Darwin in formulating his theory of natural selection.

Correct AnswerverifiedShow Answer

Which of the following agents of evolutionary change results in adaptation?

Correct AnswerverifiedShow Answer

In comparing the number of differences in amino acids for cytochrome c: between a moth and a rattlesnake there are 31 different amino acids in the sequence,between a moth and a dog there are only 25,and there are 6 differences between a dog and a horse.Therefore,

Correct AnswerverifiedShow Answer

According to the evolutionary theory,which statement is NOT true?

Correct AnswerverifiedShow Answer

The earliest forms of life on earth are found in rocks that are estimated to be

Correct AnswerverifiedD

Which statement is NOT true about nonrandom mating?

Correct AnswerverifiedShow Answer

The organisms examined by Darwin on the Galapagos Islands that were most important in his development of the theory of natural selection were

Correct AnswerverifiedShow Answer

What evidence would NOT be studied by a biogeographer?

Correct AnswerverifiedShow Answer

The new model of evolution that proposes that organisms spend most of their time in fairly unchanging form and undergo occasional bursts of speciation is called

Correct AnswerverifiedShow Answer

If there is a change in the allele frequency of a gene pool due to chance,primarily in a small population,it is termed

Correct AnswerverifiedB

Which of the following is true about natural selection?

Correct AnswerverifiedShow Answer

Which fossil evidence is considered an intermediate between reptiles and birds?

Correct AnswerverifiedShow Answer

The three domain system is primarily based on

Correct AnswerverifiedShow Answer

Which of the following mechanisms does NOT result in variation in the gene frequencies from the ancestral population?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedA

Lamarck's theory of evolution included the idea that

Correct AnswerverifiedShow Answer

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D

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B

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A

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