Question 1

What would be the most likely result if an organism with 64 chromosomes mates with a closely related organism with 62 chromosomes?

Accepted Answer

A)  many unhealthy offspring due to hybrid breakdown
B)  many unhealthy offspring due to hybrid inviability
C)  sterile offspring due to hybrid inviability
D)  sterile offspring due to hybrid sterilityE) A) and D)
F) A) and B)

Question 2

Labelling
Assign the following terms appropriately to the accompanying table by labelling with the appropriate letter. 
-ecological isolation

Accepted Answer

The answer of Labelling
Assign the following terms appropriately to the...

Question 3

Which of the following best describes the situation in which two organisms do not mate due to the fact that they mate at different times of the year?

Accepted Answer

A)  behavioral isolation
B)  ecological isolation
C)  mechanical isolation
D)  temporal isolationE) All of the above
F) A) and B)

Question 4

What does the fact that eggs have the ability to recognize surface proteins on the sperm of their own species illustrate?

Accepted Answer

A)  behavioral isolation
B)  gametic isolation
C)  hybrid breakdown
D)  hybrid inviabilityE) A) and C)
F) All of the above

Question 5

The biological species concept specifies that two organisms are of the same species if they breed. What else does this concept specify?

Accepted Answer

A)  that species are unsuccessful in producing offspring
B)  that species produce any offspring
C)  that species produce fertile offspring under laboratory conditions only
D)  that species produce fertile offspring under normal circumstancesE) None of the above
F) All of the above

Question 6

How is it that prezygotic isolating mechanisms can often be bypassed in human controlled breeding experiments?

Accepted Answer

Prezygotic isolating mechanisms generall...

Question 7

Why is reproductive isolation central to the biological species concept?

Accepted Answer

The biological species concept defines s...

Question 8

The apple maggot was used as an example of allopatric speciation.

Accepted Answer

A) True 
 B)False

Question 9

If a hybrid organism has a shorter lifespan, which situation may result?

Accepted Answer

A)  allopatric speciation
B)  hybrid zones
C)  parapatric speciation
D)  sympatric speciationE) A) and B)
F) None of the above

Question 10

Which of the following would the morphological species concept relate to more?

Accepted Answer

A)  prezygotic isolation, if only animal species are concerned
B)  postzygotic isolation, if only plant species are concerned
C)  both prezygotic and postzygotic isolation
D)  depends on the species used for the studyE) A) and C)
F) A) and D)

Question 11

Labelling
Assign the following terms appropriately to the accompanying table by labelling with the appropriate letter. 
-temporal isolation

Accepted Answer

The answer of Labelling
Assign the following terms appropriately to the...

Question 12

What does the phylogenetic species concept look at?

Accepted Answer

A)  both environmental adaptations and morphology
B)  both genetic data and environmental adaptations
C)  both morphology and environmental adaptations
D)  both morphology and genetic dataE) All of the above
F) A) and C)

Question 13

Match the appropriate definitions below to the following scientific terms.
-polyploid offspring due to an error in mitosis or meiosis

Accepted Answer

A)  allopolyploidy
B)  allopatric speciation
C)  autopolyploidy
D)  behavioral isolation
E)  biological species conceptF) hybrid breakdownG) mechanical isolationH) morphological species conceptI) parapatric speciationJ) polyploidyK) subspeciesL) sympatric speciationM) temporal isolationN) K) and M)
O) A) and D)

Question 14

What is the first event during allopatric speciation?

Accepted Answer

A)  a geographic separation of two populations
B)  a hybridization event
C)  a competitive exclusion
D)  a disruptive selectionE) None of the above
F) A) and B)

Question 15

How does gene flow between organisms of ring species occur?

Accepted Answer

A)  It occurs between any of the organisms if they are placed in the same environment.
B)  It occurs freely.
C)  It occurs only between intermediary populations.
D)  It occurs only under laboratory conditions.E) C) and D)
F) B) and C)

Question 16

The habitats of birds of paradise are on the mountains in New Guinea. What separate the habitats?

Accepted Answer

A)  areas of unsuitable land
B)  fierce predators
C)  oceans
D)  rivers and lakesE) A) and C)
F) B) and C)

Question 17

Which of the following categories of organisms is NOT known to produce viable polyploids?

Accepted Answer

A)  amphibians
B)  fish
C)  mammals
D)  reptilesE) All of the above
F) None of the above

Question 18

What do birds living in a cold environment tend to have?

Accepted Answer

A)  long legs and larger bodies
B)  long legs and smaller bodies
C)  short legs and larger bodies
D)  short legs and smaller bodiesE) A) and B)
F) B) and C)

Question 19

If two organisms cannot mate due to physical differences, it is known as temporal isolation.

Accepted Answer

A) True 
 B)False

Question 20

What is the definition of allopolyploidy?

Accepted Answer

A)  a genetic divergence that results in nonviable offspring
B)  a decrease in chromosome number due to hybridization of different species
C)  a decrease in chromosome number within a single species
D)  an increase in chromosome number due to hybridization of different speciesE) A) and B)
F) A) and C)

Exam 19: Species and Macroevolution

Which of the following best describes the situation in which two organisms do not mate due to the fact that they mate at different times of the year?

Correct AnswerverifiedShow Answer

What do birds living in a cold environment tend to have?

Correct AnswerverifiedShow Answer

The habitats of birds of paradise are on the mountains in New Guinea. What separate the habitats?

Correct AnswerverifiedShow Answer

Match the appropriate definitions below to the following scientific terms. -polyploid offspring due to an error in mitosis or meiosis

Correct AnswerverifiedShow Answer

What is the definition of allopolyploidy?

Correct AnswerverifiedShow Answer

How does gene flow between organisms of ring species occur?

Correct AnswerverifiedShow Answer

The biological species concept specifies that two organisms are of the same species if they breed. What else does this concept specify?

Correct AnswerverifiedShow Answer

What does the phylogenetic species concept look at?

Correct AnswerverifiedShow Answer

The apple maggot was used as an example of allopatric speciation.

Correct AnswerverifiedShow Answer

If a hybrid organism has a shorter lifespan, which situation may result?

Correct AnswerverifiedShow Answer

What would be the most likely result if an organism with 64 chromosomes mates with a closely related organism with 62 chromosomes?

Correct AnswerverifiedShow Answer

How is it that prezygotic isolating mechanisms can often be bypassed in human controlled breeding experiments?

Correct AnswerverifiedPrezygotic isolating mechanisms generall...View AnswerShow Answer

Labelling Assign the following terms appropriately to the accompanying table by labelling with the appropriate letter. -temporal isolation

Correct AnswerverifiedShow Answer

What is the first event during allopatric speciation?

Correct AnswerverifiedShow Answer

If two organisms cannot mate due to physical differences, it is known as temporal isolation.

Correct AnswerverifiedShow Answer

Labelling Assign the following terms appropriately to the accompanying table by labelling with the appropriate letter. -ecological isolation

Correct AnswerverifiedShow Answer

What does the fact that eggs have the ability to recognize surface proteins on the sperm of their own species illustrate?

Correct AnswerverifiedShow Answer

Which of the following categories of organisms is NOT known to produce viable polyploids?

Correct AnswerverifiedShow Answer

Which of the following would the morphological species concept relate to more?

Correct AnswerverifiedShow Answer

Why is reproductive isolation central to the biological species concept?

Correct AnswerverifiedThe biological species concept defines s...View AnswerShow Answer

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Prezygotic isolating mechanisms generall...
View Answer

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The biological species concept defines s...
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