Question 1

Which of the following would NOT result in reproductive isolation?

Accepted Answer

A)  Snakes found in one state are genetically identical to snakes found in a neighboring state with no geographic barriers separating them.
B)  Fruit flies on one Hawaiian island live for hundreds of generations and do not come in contact with fruit flies on another island except when blown there by rare tropical storms.
C)  One brood of the 17-year cicada emerged in 1987 (and will do so every 17 years) and lives a few months as adults; another brood emerged in 1992 (and will do so every 17 years) ; the larvae of both feed side by side on tree roots.
D)  A lion and a tiger mate in the artificial confines of a zoo but the offspring is infertile.
E)  Two populations of crickets are indistinguishable in physical features but the females in each group only come to the different songs of their males.F) C) and D)
G) A) and E)

Question 2

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 D)
G) A) and E)

Question 3

The geological time scale indicates the order of eras is Cenozoic as the most recent; the middle era is the Mesozoic,with dinosaurs as the major group; and the earliest era is the Paleozoic.Consider a hillside of rock that surfaces in your backyard that is identified as dating back to the Mesozoic era.What is possible?

Accepted Answer

A)  Fossils from all other eras can still be found underneath if you dig far enough.
B)  All periods of fossils were once present in the backyard but older ones were eroded away.
C)  Fossils were mainly deposited when your backyard was sediment,so many layers might be missing,but any layer from Cenozoic to Paleozoic might be found.
D)  Fossils were mainly deposited when your backyard was sediment,so many layers might be missing,but any layer from earlier Mesozoic through Paleozoic might be found.
E)  Only one layer of fossils can be found at any site.F) A) and B)
G) A) and C)

Question 4

The Amish of Lancaster,PA.have a higher frequency of an unusual form of dwarfism than the population at large.This is probably due to

Accepted Answer

A)  natural selection.
B)  a bottleneck effect.
C)  a founder effect.
D)  vestigial structures.
E)  industrial melanism.F) A) and C)
G) None of the above

Question 5

An insect population lives along the edge of a north-south mountain range.The populations from the east and west slope eventually join in a low northern pass and interbreed,producing fertile offspring; but they do not circle around the southern edge because of a desert barrier.When glaciers move southward,the populations are pushed south of the northern pass and are isolated.While isolated,the two populations develop enough differences over time that when the glaciers retreat north and the insects again share the same pass,they no longer mate at the same time,nor can they produce fertile offspring.These insects

Accepted Answer

A)  began as one species and therefore remain one species.
B)  were originally two species and remain two species.
C)  were originally two species but are now one species.
D)  were originally one species but are now two species.
E)  The number of species cannot be determined from the information given.F) A) and D)
G) B) and D)

Question 6

Gulls recognize their own species by the type of ring around the eye.This is an example of

Accepted Answer

A)  geographical isolation.
B)  ecological isolation.
C)  behavioral isolation.
D)  physiological isolation.
E)  temporal isolation.F) C) and D)
G) A) and C)

Question 7

When only a few individuals survive unfavorable times,thereby losing the majority of genotypes in the next generation,it is called

Accepted Answer

A)  natural selection.
B)  a bottleneck effect.
C)  a founder effect.
D)  vestigial structures.
E)  industrial melanism.F) A) and B)
G) A) and C) B

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) All of the above
G) A) and B)

Question 9

What is the term used to describe the accumulation of small changes in the gene pool of a species over time?

Accepted Answer

A)  genetic drift
B)  founder effect
C)  microevolution
D)  directional selection
E)  mutation rateF) A) and B)
G) All of the above

Question 10

During allopatric speciation

Accepted Answer

A)  gene flow continues between subpopulations.
B)  reproduction between all subpopulations is impossible.
C)  a geographic separation occurs between subpopulations.
D)  wide phenotype differences appear between subpopulations.
E)  subpopulations are still able to interbreed.F) None of the above
G) B) and D)

Question 11

What is the correct order of the steps regarding speciation?

Accepted Answer

A)  geographic isolation  →\rightarrow→ one species  →\rightarrow→  reproductive isolation  →\rightarrow→  two species
B)  two species  →\rightarrow→  geographic isolation  →\rightarrow→  one species  →\rightarrow→  reproductive isolation
C)  one species  →\rightarrow→  geographic isolation  →\rightarrow→ reproductive isolation  →\rightarrow→ two species
D)  reproductive isolation  →\rightarrow→  one species  →\rightarrow→  reproductive isolation →\rightarrow→ two species
E)  reproductive isolation  →\rightarrow→ two species  →\rightarrow→  reproductive isolation  →\rightarrow→  one species F) C) and D)
G) A) and D)

Question 12

The model of speciation that requires some time with geographic barriers between two populations,allowing evolution of reproductive isolation,is

Accepted Answer

A)  allopatric speciation.
B)  phyletic gradualism.
C)  sympatric speciation.
D)  punctuated equilibrium.
E)  prezygotic isolation.F) B) and C)
G) A) and B) A

Question 13

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 C)

Question 14

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) All of the above
G) None of the above

Question 15

All the members of a single species that occupy a particular area and are able to interbreed are a

Accepted Answer

A)  subspecies.
B)  gene pool.
C)  population.
D)  domain.
E)  community.F) B) and E)
G) D) and E)

Question 16

Consider that the rock outcrops at the surface of the land in your neighborhood are Permian.What would be true if you dig downward?

Accepted Answer

A)  You may find dinosaur fossils below.
B)  You may find fossils of first flowers.
C)  The Mesozoic layers will be present underneath.
D)  A road cut in your area would reveal exactly the same species of fossils as a road cut through a Permian layer in Asia.
E)  You may find fossils of the first reptiles or jawed fishes below.F) A) and E)
G) B) and C)

Question 17

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) A) and B)
G) All of the above

Question 18

During sympatric speciation

Accepted Answer

A)  evolution ceases for a time.
B)  wide phenotype differences disappear between subpopulations.
C)  reproductive isolation between certain subpopulations occurs.
D)  a geographic separation occurs between certain subpopulations.
E)  mutations begin to appear,making the subpopulations distinctly different.F) A) and D)
G) A) and B)

Question 19

Anatomical features that are fully developed and functional in one group of organisms but reduced and functionless in a similar group are termed

Accepted Answer

A)  vestigial.
B)  homologous.
C)  analogous.
D)  polygenic.
E)  sympatric.F) A) and E)
G) A) and D)

Question 20

Transitional forms are seen in the fossil record that link all of these groups EXCEPT

Accepted Answer

A)  reptiles and birds.
B)  amphibians and reptiles.
C)  fish and amphibians.
D)  birds and mammals.
E)  reptiles and mammals.F) A) and D)
G) A) and C) D

Exam 27: Evolution of Life

Which of the following would NOT result in reproductive isolation?

Correct Answer
verified

Which of the following is true about natural selection?

Correct Answer
verified

Correct Answer
verified

The Amish of Lancaster,PA.have a higher frequency of an unusual form of dwarfism than the population at large.This is probably due to

Correct Answer
verified

Correct Answer
verified

Gulls recognize their own species by the type of ring around the eye.This is an example of

Correct Answer
verified

When only a few individuals survive unfavorable times,thereby losing the majority of genotypes in the next generation,it is called

Correct Answer
verified
B

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

Correct Answer
verified

What is the term used to describe the accumulation of small changes in the gene pool of a species over time?

Correct Answer
verified

During allopatric speciation

Correct Answer
verified

What is the correct order of the steps regarding speciation?

Correct Answer
verified

The model of speciation that requires some time with geographic barriers between two populations,allowing evolution of reproductive isolation,is

Correct Answer
verified
A

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

Correct Answer
verified

The age of the earth is estimated to be about

Correct Answer
verified

All the members of a single species that occupy a particular area and are able to interbreed are a

Correct Answer
verified

Consider that the rock outcrops at the surface of the land in your neighborhood are Permian.What would be true if you dig downward?

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

During sympatric speciation

Correct Answer
verified

Anatomical features that are fully developed and functional in one group of organisms but reduced and functionless in a similar group are termed

Correct Answer
verified

Transitional forms are seen in the fossil record that link all of these groups EXCEPT

Correct Answer
verified
D

Exam 27: Evolution of Life

Which of the following would NOT result in reproductive isolation?

Correct AnswerverifiedShow Answer

Which of the following is true about natural selection?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The Amish of Lancaster,PA.have a higher frequency of an unusual form of dwarfism than the population at large.This is probably due to

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Gulls recognize their own species by the type of ring around the eye.This is an example of

Correct AnswerverifiedShow Answer

When only a few individuals survive unfavorable times,thereby losing the majority of genotypes in the next generation,it is called

Correct AnswerverifiedB

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

Correct AnswerverifiedShow Answer

What is the term used to describe the accumulation of small changes in the gene pool of a species over time?

Correct AnswerverifiedShow Answer

During allopatric speciation

Correct AnswerverifiedShow Answer

What is the correct order of the steps regarding speciation?

Correct AnswerverifiedShow Answer

The model of speciation that requires some time with geographic barriers between two populations,allowing evolution of reproductive isolation,is

Correct AnswerverifiedA

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

Correct AnswerverifiedShow Answer

The age of the earth is estimated to be about

Correct AnswerverifiedShow Answer

All the members of a single species that occupy a particular area and are able to interbreed are a

Correct AnswerverifiedShow Answer

Consider that the rock outcrops at the surface of the land in your neighborhood are Permian.What would be true if you dig downward?

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 AnswerverifiedShow Answer

During sympatric speciation

Correct AnswerverifiedShow Answer

Anatomical features that are fully developed and functional in one group of organisms but reduced and functionless in a similar group are termed

Correct AnswerverifiedShow Answer

Transitional forms are seen in the fossil record that link all of these groups EXCEPT

Correct AnswerverifiedD

Correct Answer
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Correct Answer
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B

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A

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D