Question 1

Systematics utilizes taxonomy and proposed evolutionary relationships to organize life's diversity into groups that reflect evolutionary history.

Accepted Answer

A) True 
 B)False

Question 2

Polyploidy is common in _____ species.

Accepted Answer

A)   fungal
B)   All of the answer choices are correct.
C)   plant
D)   bacterial
E)   animalF) B) and D)
G) A) and B)

Question 3

Figuer: 
-From the data shown in the table,what can be concluded about the flower preferences of bumblebees?

Accepted Answer

A)   They prefer yellow-orange flowers only found in M. lewisii.
B)   They prefer red flowers in both species of monkeyflower.
C)   They prefer pink flowers in both species of monkeyflower.
D)   They prefer M. cardinalis, no matter the color of the flowers.
E)   They prefer M. lewisii, no matter the color of the flowers.F) B) and D)
G) A) and B)

Question 4

The idea that evolution proceeds in small,incremental changes over many generations is

Accepted Answer

A)   temporal equilibrium.
B)   gradualism.
C)   catastrophism.
D)   temporal isolation.
E)   punctuated equilibrium.F) A) and C)
G) C) and D)

Question 5

In the Grand Canyon,in the southwestern U.S.,there are many species of squirrels,including the Albert Squirrel and a "subspecies," the Kaibab Squirrel (isolation is not complete,according to the biological species definition by Ernst Mayr) .The two populations of squirrels can interbreed to produce fertile offspring,but the populations exist on different portions of the rim of the Grand Canyon,separated by the canyon and the Colorado River.This is an example of

Accepted Answer

A)   sympatric speciation.
B)   postzygotic speciation.
C)   prezygotic specation.
D)   parapatric speciation.
E)   allopatric speciation.F) A) and B)
G) A) and C)

Question 6

The sea snail,Littorina saxatilis,is found on the coast of northern Spain.The snails further upshore are large with heavily ridged and banded shells,and share a border with the snails further downshore that are smaller with smooth,unbanded shells.If the upshore and downshore snails were to become separate species,this would be an example of _____ speciation.

Accepted Answer

A)   sympatric
B)   parapatric
C)   prezygotic
D)   allopatric
E)   postzygoticF) None of the above
G) A) and D)

Question 7

Formation of a tetraploid plant from two different diploid parental species of plants is an example of ____ speciation.

Accepted Answer

A)   postzygotic
B)   prezygotic
C)   sympatric
D)   parapatric
E)   allopatricF) A) and B)
G) A) and E)

Question 8

By using fossil evidence,paleontologists have concluded that most species exist from _____ years before becoming extinct.

Accepted Answer

A)   1,000 to 10,000
B)   100 to 1,000
C)   10,000 to 100,000
D)   one million to 10 million
E)   100,000 to one millionF) B) and C)
G) B) and D)

Question 9

Figuer:  
-The outgroup in this cladogram of vertebrate animals is the amphibians.

Accepted Answer

A) True 
 B)False

Question 10

Today,scientists can deduce evolutionary relationships by DNA sequence analysis.

Accepted Answer

A) True 
 B)False

Question 11

According to the definition of a biological species,M.lewisii and M.cardinalis can interbreed to produce viable offspring,but are different species for which reason?

Accepted Answer

A)   They live on different continents.
B)   If they breed, they do not form fertile offspring.
C)   They do not breed in the wild.
D)   If they breed, they do not form viable offspring.
E)   They do not look alike.F) C) and E)
G) B) and E)

Question 12

A polyphyletic group is a group of species that excludes the most recent common ancestor.

Accepted Answer

A) True 
 B)False

Question 13

The speciation that occurred in the islands of the Greater Antilles (i.e.,Cuba,Puerto Rico,Jamaica,and Hispaniola)with lizards called anoles is an example of adaptive radiation.

Accepted Answer

A) True 
 B)False

Question 14

The types of living organisms on Earth have changed over time,new species have originated,and existing species have disappeared.These are examples of

Accepted Answer

A)   macroevolution.
B)   hybridization.
C)   speciation.
D)   alternation of generations.
E)   extinction.F) D) and E)
G) C) and E)

Question 15

Figuer:  
-Starting from the root of a phylogenetic tree,any node that is shown further from the root,than other nodes,means

Accepted Answer

A)   the species (or groups represented)  diverged most recently from a common ancestor.
B)   the two species (or groups of species represented)  at the furthest node diverged by sympatric speciation.
C)   convergent evolution has selected for the species (or groups of species represented)  to be similar.
D)   the species (or groups of species represented)  are in the outgroup.
E)   that only those species at the furthest node, from the root, are in a clade.F) B) and E)
G) A) and B)

Question 16

Spiny,succulent plants in the Americas are usually in the Cactaceae family,while nearly identical plants in the Mediterranean and northern Africa are in the Euphorbiaceae family.A phylogeny based solely on morphology

Accepted Answer

A)   is the basic definition of the systematics approach called cladistics.
B)   requires full identification of all the living and fossil species, before relationships can be assessed.
C)   places both the Cactaceae and Euphorbiaceae in the same family clade.
D)   establishes an accurate evolutionary link, through ancestry of the cactus and euphorb plants.
E)   can lead to proposals of inaccurate relationships, because of convergent evolution.F) C) and D)
G) A) and D)

Question 17

Figuer: 
-The research by Bradshaw and Schemske supports the hypothesis that a change in just one gene locus may have jump-started speciation in Mimulus.If so,this would be an example of

Accepted Answer

A)   gradualism.
B)   postzygotic barriers to reproduction.
C)   prezygotic barriers to reproduction.
D)   punctuated equilibrium.
E)   adaptive radiation.F) C) and D)
G) B) and E)

Question 18

A single common ancestor evolving into the current 28 species of silversword plants found among the Hawaiian islands is an example of

Accepted Answer

A)   adaptive radiation.
B)   punctuated equilibrium.
C)   extinction.
D)   gradualism.
E)   a prezygotic barrier to evolution.F) C) and D)
G) D) and E)

Question 19

Birds use specific songs,coloring,and mating dances to attract mates of their species (sexual selection) .This is an example of ____ reproductive isolation.

Accepted Answer

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

Question 20

The rate of background extinctions is calculated to be _____ species per year per million species.

Accepted Answer

A)   None of the answer choices are correct.
B)   0.001 to 0.01
C)   10 to 100
D)   1.0 to 10
E)   0.1 to 1.0F) C) and E)
G) B) and E)

Exam 14: Speciation and Extinction

Today,scientists can deduce evolutionary relationships by DNA sequence analysis.

Correct Answer
verified

The idea that evolution proceeds in small,incremental changes over many generations is

Correct Answer
verified

Correct Answer
verified

Figuer: -Starting from the root of a phylogenetic tree,any node that is shown further from the root,than other nodes,means

Correct Answer
verified

Formation of a tetraploid plant from two different diploid parental species of plants is an example of ____ speciation.

Correct Answer
verified

Figuer: -The outgroup in this cladogram of vertebrate animals is the amphibians.

Correct Answer
verified

Figuer: -From the data shown in the table,what can be concluded about the flower preferences of bumblebees?

Correct Answer
verified

The speciation that occurred in the islands of the Greater Antilles (i.e.,Cuba,Puerto Rico,Jamaica,and Hispaniola)with lizards called anoles is an example of adaptive radiation.

Correct Answer
verified

Systematics utilizes taxonomy and proposed evolutionary relationships to organize life's diversity into groups that reflect evolutionary history.

Correct Answer
verified

The types of living organisms on Earth have changed over time,new species have originated,and existing species have disappeared.These are examples of

Correct Answer
verified

According to the definition of a biological species,M.lewisii and M.cardinalis can interbreed to produce viable offspring,but are different species for which reason?

Correct Answer
verified

Birds use specific songs,coloring,and mating dances to attract mates of their species (sexual selection) .This is an example of ____ reproductive isolation.

Correct Answer
verified

Polyploidy is common in _____ species.

Correct Answer
verified

By using fossil evidence,paleontologists have concluded that most species exist from _____ years before becoming extinct.

Correct Answer
verified

A polyphyletic group is a group of species that excludes the most recent common ancestor.

Correct Answer
verified

Figuer: -The research by Bradshaw and Schemske supports the hypothesis that a change in just one gene locus may have jump-started speciation in Mimulus.If so,this would be an example of

Correct Answer
verified

Spiny,succulent plants in the Americas are usually in the Cactaceae family,while nearly identical plants in the Mediterranean and northern Africa are in the Euphorbiaceae family.A phylogeny based solely on morphology

Correct Answer
verified

A single common ancestor evolving into the current 28 species of silversword plants found among the Hawaiian islands is an example of

Correct Answer
verified

Correct Answer
verified

The rate of background extinctions is calculated to be _____ species per year per million species.

Correct Answer
verified

Exam 14: Speciation and Extinction

Today,scientists can deduce evolutionary relationships by DNA sequence analysis.

Correct AnswerverifiedShow Answer

The idea that evolution proceeds in small,incremental changes over many generations is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Figuer: -Starting from the root of a phylogenetic tree,any node that is shown further from the root,than other nodes,means

Correct AnswerverifiedShow Answer

Formation of a tetraploid plant from two different diploid parental species of plants is an example of ____ speciation.

Correct AnswerverifiedShow Answer

Figuer: -The outgroup in this cladogram of vertebrate animals is the amphibians.

Correct AnswerverifiedShow Answer

Figuer: -From the data shown in the table,what can be concluded about the flower preferences of bumblebees?

Correct AnswerverifiedShow Answer

The speciation that occurred in the islands of the Greater Antilles (i.e.,Cuba,Puerto Rico,Jamaica,and Hispaniola)with lizards called anoles is an example of adaptive radiation.

Correct AnswerverifiedShow Answer

Systematics utilizes taxonomy and proposed evolutionary relationships to organize life's diversity into groups that reflect evolutionary history.

Correct AnswerverifiedShow Answer

The types of living organisms on Earth have changed over time,new species have originated,and existing species have disappeared.These are examples of

Correct AnswerverifiedShow Answer

According to the definition of a biological species,M.lewisii and M.cardinalis can interbreed to produce viable offspring,but are different species for which reason?

Correct AnswerverifiedShow Answer

Birds use specific songs,coloring,and mating dances to attract mates of their species (sexual selection) .This is an example of ____ reproductive isolation.

Correct AnswerverifiedShow Answer

Polyploidy is common in _____ species.

Correct AnswerverifiedShow Answer

By using fossil evidence,paleontologists have concluded that most species exist from _____ years before becoming extinct.

Correct AnswerverifiedShow Answer

A polyphyletic group is a group of species that excludes the most recent common ancestor.

Correct AnswerverifiedShow Answer

Figuer: -The research by Bradshaw and Schemske supports the hypothesis that a change in just one gene locus may have jump-started speciation in Mimulus.If so,this would be an example of

Correct AnswerverifiedShow Answer

Spiny,succulent plants in the Americas are usually in the Cactaceae family,while nearly identical plants in the Mediterranean and northern Africa are in the Euphorbiaceae family.A phylogeny based solely on morphology

Correct AnswerverifiedShow Answer

A single common ancestor evolving into the current 28 species of silversword plants found among the Hawaiian islands is an example of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The rate of background extinctions is calculated to be _____ species per year per million species.

Correct AnswerverifiedShow Answer

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