Question 1

In the section "Investigating Life: Birds Do It,Bees Do It",bumblebees pollinated M.lewisii,whereas hummingbirds preferred the red-flowered M.cardinalis.If a hummingbird carries M.cardinalis pollen to M.lewisii,the resulting hybrid offspring are viable.M.lewisii and M.cardinalis are different species because of

Accepted Answer

A)  post-zygotic barriers to reproduction.
B)  pre-zygotic barriers to reproduction.
C)  punctuated equilibrium.
D)  gradualism.
E)  asexual reproduction.F) B) and C)
G) A) and B)

Question 2

In the section "Investigating Life: Birds Do It,Bees Do It",how did the researchers alter the colors of M.lewisii and M.cardinalis?

Accepted Answer

A)  by looking for naturally occurring color variants of M.lewisii and M.cardinalis in the wild
B)  by creating transgenic flowers with the desired color
C)  by deleting the YUP locus
D)  by duplicating the YUP locus
E)  by selectively breeding M.lewisii and M.cardinalis,yielding hybrid colors similar to the other speciesF) A) and C)
G) A) and E)

Question 3

A sterile mule is produced by mating a horse and a donkey.This is an example of ____ reproductive isolation.

Accepted Answer

A)  prezygotic
B)  allopatric
C)  sympatric
D)  outgroup
E)  postzygoticF) B) and E)
G) A) and E)

Question 4

Scientists can fill in gaps in defining species by DNA sequence analysis.

Accepted Answer

A) True 
 B)False  True

Question 5

Among evolutionary biologists the idea of sympatric speciation is controversial.

Accepted Answer

A) True 
 B)False

Question 6

Tortoises colonizing the different Galapagos islands and evolving into different species is an example of ____ speciation.

Accepted Answer

A)  prezygotic
B)  allopatric
C)  postzygotic
D)  sympatric
E)  outgroupF) B) and C)
G) None of the above

Question 7

A small angle for a branch point in an evolutionary tree indicates

Accepted Answer

A)  extinction.
B)  punctuated equilibrium.
C)  gradualism.
D)  convergent evolution.
E)  temporal isolation.F) A) and B)
G) A) and D)

Question 8

The rate of background extinctions is

Accepted Answer

A)  0.1 to 1.0 species per year per million species.
B)  0.001 to 0.01 species per year per million species.
C)  1.0 to 10 species per year per million species.
D)  10 to 100 species per year per million species.
E)  None of the answers are correct.F) A) and C)
G) A) and D)

Question 9

In the section "Investigating Life: Birds Do It,Bees Do It",what can be concluded about the flower preferences of bumblebees?

Accepted Answer

A)  They prefer pink flowers.
B)  They prefer red flowers.
C)  They prefer yellow-orange flowers.
D)  They prefer M.lewisii no matter what color the flowers are.
E)  They prefer M.cardinalis no matter what color the flowers arE.F) B) and D)
G) B) and C)

Question 10

A sterile mule is produced by mating a horse and a donkey.From this observation you could conclude

Accepted Answer

A)  that horses and donkeys are the same species.
B)  that horses and donkeys are different species.
C)  that mules are a result of macroevolution.
D)  increasing the number of mules in a population will affect the allele frequency in the next generation.
E)  the DNA sequences of horses and donkeys are more than 97% identical.F) A) and E)
G) A) and D)

Question 11

Mules are a distinct species because they produce fertile offspring when mated.

Accepted Answer

A) True 
 B)False  False

Question 12

What is the least inclusive level of the hierarchical classification scheme?

Accepted Answer

A)  domain
B)  phylum
C)  kingdom
D)  genus
E)  speciesF) B) and E)
G) B) and D)

Question 13

The more heritable traits organisms share,the more taxonomic levels they share.

Accepted Answer

A) True 
 B)False

Question 14

The type of reproductive isolation in which two populations live in the same habitat but remain isolated from one another due to one being active during the daytime only and the other being active only during the night is

Accepted Answer

A)  behavioral isolation.
B)  gametic isolation.
C)  mechanical isolation.
D)  temporal isolation.
E)  sexual selection.F) D) and E)
G) A) and B)

Question 15

In the section "Investigating Life: Birds Do It,Bees Do It",in the wild-type purple monkeyflower (M.lewisii) ,the dominant YUP allele prevents carotenoids from forming,leaving the pinkish-purple anthocyanin pigments to provide the petal color.A wild-type scarlet monkeyflower (M.cardinalis) has which genotype?

Accepted Answer

A)  yup/yup
B)  YUP/YUP
C)  YUP/yup
D)  YUP
E)  yupF) None of the above
G) B) and E)

Question 16

The scientific name of humans is Homo sapiens.What is the species of humans?

Accepted Answer

A)  Homo
B)  sapiens
C)  Homo sapiens
D)  Animalia
E)  EukaryaF) All of the above
G) A) and E)

Question 17

Birds are most closely related to

Accepted Answer

A)  crocodiles.
B)  snakes.
C)  mammals.
D)  non-avian dinosaurs.
E)  amphibians.F) None of the above
G) D) and E) D

Question 18

Some flowers bloom in the spring while others bloom in the summer.This is an example of ____ reproductive isolation.

Accepted Answer

A)  postzygotic
B)  allopatric
C)  sympatric
D)  outgroup
E)  prezygoticF) D) and E)
G) A) and B)

Question 19

A biological species is defined as a population whose members can interbreed,although the offspring may be infertile.

Accepted Answer

A) True 
 B)False

Question 20

The scientist given credit for devising the two-word naming system of all living organisms is

Accepted Answer

A)  Aristotle.
B)  Charles Darwin.
C)  Gregor Mendel.
D)  Carolus Linnaeus.
E)  Louis Pasteur.F) A) and B)
G) C) and D)

Exam 14: Speciation and Extinction

Correct Answer
verified

In the section "Investigating Life: Birds Do It,Bees Do It",how did the researchers alter the colors of M.lewisii and M.cardinalis?

Correct Answer
verified

A sterile mule is produced by mating a horse and a donkey.This is an example of ____ reproductive isolation.

Correct Answer
verified

Scientists can fill in gaps in defining species by DNA sequence analysis.

Correct Answer
verified
True

Among evolutionary biologists the idea of sympatric speciation is controversial.

Correct Answer
verified

Tortoises colonizing the different Galapagos islands and evolving into different species is an example of ____ speciation.

Correct Answer
verified

A small angle for a branch point in an evolutionary tree indicates

Correct Answer
verified

The rate of background extinctions is

Correct Answer
verified

In the section "Investigating Life: Birds Do It,Bees Do It",what can be concluded about the flower preferences of bumblebees?

Correct Answer
verified

A sterile mule is produced by mating a horse and a donkey.From this observation you could conclude

Correct Answer
verified

Mules are a distinct species because they produce fertile offspring when mated.

Correct Answer
verified
False

What is the least inclusive level of the hierarchical classification scheme?

Correct Answer
verified

The more heritable traits organisms share,the more taxonomic levels they share.

Correct Answer
verified

The type of reproductive isolation in which two populations live in the same habitat but remain isolated from one another due to one being active during the daytime only and the other being active only during the night is

Correct Answer
verified

Correct Answer
verified

The scientific name of humans is Homo sapiens.What is the species of humans?

Correct Answer
verified

Birds are most closely related to

Correct Answer
verified
D

Some flowers bloom in the spring while others bloom in the summer.This is an example of ____ reproductive isolation.

Correct Answer
verified

A biological species is defined as a population whose members can interbreed,although the offspring may be infertile.

Correct Answer
verified

The scientist given credit for devising the two-word naming system of all living organisms is

Correct Answer
verified

Exam 14: Speciation and Extinction

Correct AnswerverifiedShow Answer

In the section "Investigating Life: Birds Do It,Bees Do It",how did the researchers alter the colors of M.lewisii and M.cardinalis?

Correct AnswerverifiedShow Answer

A sterile mule is produced by mating a horse and a donkey.This is an example of ____ reproductive isolation.

Correct AnswerverifiedShow Answer

Scientists can fill in gaps in defining species by DNA sequence analysis.

Correct AnswerverifiedTrue

Among evolutionary biologists the idea of sympatric speciation is controversial.

Correct AnswerverifiedShow Answer

Tortoises colonizing the different Galapagos islands and evolving into different species is an example of ____ speciation.

Correct AnswerverifiedShow Answer

A small angle for a branch point in an evolutionary tree indicates

Correct AnswerverifiedShow Answer

The rate of background extinctions is

Correct AnswerverifiedShow Answer

In the section "Investigating Life: Birds Do It,Bees Do It",what can be concluded about the flower preferences of bumblebees?

Correct AnswerverifiedShow Answer

A sterile mule is produced by mating a horse and a donkey.From this observation you could conclude

Correct AnswerverifiedShow Answer

Mules are a distinct species because they produce fertile offspring when mated.

Correct AnswerverifiedFalse

What is the least inclusive level of the hierarchical classification scheme?

Correct AnswerverifiedShow Answer

The more heritable traits organisms share,the more taxonomic levels they share.

Correct AnswerverifiedShow Answer

The type of reproductive isolation in which two populations live in the same habitat but remain isolated from one another due to one being active during the daytime only and the other being active only during the night is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The scientific name of humans is Homo sapiens.What is the species of humans?

Correct AnswerverifiedShow Answer

Birds are most closely related to

Correct AnswerverifiedD

Some flowers bloom in the spring while others bloom in the summer.This is an example of ____ reproductive isolation.

Correct AnswerverifiedShow Answer

A biological species is defined as a population whose members can interbreed,although the offspring may be infertile.

Correct AnswerverifiedShow Answer

The scientist given credit for devising the two-word naming system of all living organisms is

Correct AnswerverifiedShow Answer

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True

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False

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D

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