Question 1

What is a molecular clock?

Accepted Answer

A)  a method used to determine time based on base pair substitutions 
B)  a method to deduce divergence time between lineages in a phylogeny 
C)  a method that can be calibrated with other markers of time, like fossils with known ages 
D)  all of the above 
A)  a method used to determine time based on base pair substitutions 
B)  a method to deduce divergence time between lineages in a phylogeny 
C)  a method that can be calibrated with other markers of time, like fossils with known ages 
D)  all of the above

Question 2

Which species concept would assign isolated giraffe populations with little gene flow to separate species based on differences in mitochondrial DNA between the populations

Accepted Answer

A)  the biological species concept. 
B)  the general lineage species concept. 
C)  the phylogenetic species concept. 
D)  all of the above 
A)  the biological species concept. 
B)  the general lineage species concept. 
C)  the phylogenetic species concept. 
D)  all of the above

Question 3

Which species concept(s) would be most useful for a conservation biologist?

Accepted Answer

A)  phylogenetic species concept 
B)  biological species concept 
C)  general lineage species concept 
D)  a and c 
E)  a, b, and c 
A)  phylogenetic species concept 
B)  biological species concept 
C)  general lineage species concept 
D)  a and c 
E)  a, b, and c

Question 4

What do hybridization studies on Drosophila melanogaster tell us about how long it takes reproductive barriers to lead to new fly species?

Accepted Answer

A)  It takes a long time for these flies to become isolated enough to be considered a new species. 
B)  Postzygotic isolation often evolves faster than prezygotic isolation in flies. 
C)  It takes a short time for these flies to become isolated enough to be considered a new species. 
D)  a and b 
E)  b and c 
A)  It takes a long time for these flies to become isolated enough to be considered a new species. 
B)  Postzygotic isolation often evolves faster than prezygotic isolation in flies. 
C)  It takes a short time for these flies to become isolated enough to be considered a new species. 
D)  a and b 
E)  b and c

Question 5

You are studying speciation in crickets. You find that males and females from different populations will mate, but few eggs get fertilized. This is an example of what type of reproductive isolating barrier?

Accepted Answer

A)  pre-mating 
B)  post-mating, prezygotic 
C)  intrinsic postzygotic 
D)  extrinsic postzygotic 
A)  pre-mating 
B)  post-mating, prezygotic 
C)  intrinsic postzygotic 
D)  extrinsic postzygotic

Question 6

Evidence that sexual selection may play an important role in speciation of Hawaiian swordtail crickets includes the fact that

Accepted Answer

A)  genetic variation in male song and female preference created a reproductive barrier. 
B)  crickets only diverged ecologically when colonizing new islands. 
C)  genetic variation in male song was not accompanied by variation in female preference. 
D)  genetic variation in female preference did not influence gene flow between populations. 
A)  genetic variation in male song and female preference created a reproductive barrier. 
B)  crickets only diverged ecologically when colonizing new islands. 
C)  genetic variation in male song was not accompanied by variation in female preference. 
D)  genetic variation in female preference did not influence gene flow between populations.

Question 7

Describe how ecological adaptation through changes in beak size leads to reproductive isolation between different species of Darwin's finches.

Accepted Answer

Darwin's finches are a group of closely

Question 8

Describe a situation where biologists using the phylogenetic species concept and those using the biological species concept would reach different conclusions on whether two populations represent different species.

Accepted Answer

One situation where biologists using the

What is a molecular clock?

Which species concept would assign isolated giraffe populations with little gene flow to separate species based on differences in mitochondrial DNA between the populations

Which species concept(s) would be most useful for a conservation biologist?

What do hybridization studies on Drosophila melanogaster tell us about how long it takes reproductive barriers to lead to new fly species?

You are studying speciation in crickets. You find that males and females from different populations will mate, but few eggs get fertilized. This is an example of what type of reproductive isolating barrier?

Evidence that sexual selection may play an important role in speciation of Hawaiian swordtail crickets includes the fact that

Describe how ecological adaptation through changes in beak size leads to reproductive isolation between different species of Darwin's finches.

Describe a situation where biologists using the phylogenetic species concept and those using the biological species concept would reach different conclusions on whether two populations represent different species.

The Whale and the Virus: How Scientists Study Evolution

From Natural Philosophy to Darwin: a Brief History of Evolutionary Ideas

What the Rocks Say: How Geology and Paleontology Reveal the History of Life

The Tree of Life: How Biologists Use Phylogeny to Reconstruct the Deep Past

Raw Material: Heritable Variation Among Individuals

The Ways of Change: Drift and Selection

Beyond Alleles: Quantitative Genetics and the Evolution of Phenotypes

The History in Our Genes

From Genes to Traits: the Evolution of Genetic Networks and Development

Natural Selection: Empirical Studies in the Wild

Sex: Causes and Consequences

After Conception: the Evolution of Life History and Parental Care

Macroevolution: the Long Run

Intimate Partnerships: How Species Adapt to Each Other

Brains and Behavior

Human Evolution: a New Kind of Ape

Evolutionary Medicine

Filters

Exam 13: The Origin of Species

What is a molecular clock?

Which species concept would assign isolated giraffe populations with little gene flow to separate species based on differences in mitochondrial DNA between the populations

Which species concept(s) would be most useful for a conservation biologist?

What do hybridization studies on Drosophila melanogaster tell us about how long it takes reproductive barriers to lead to new fly species?

You are studying speciation in crickets. You find that males and females from different populations will mate, but few eggs get fertilized. This is an example of what type of reproductive isolating barrier?

Evidence that sexual selection may play an important role in speciation of Hawaiian swordtail crickets includes the fact that

Describe how ecological adaptation through changes in beak size leads to reproductive isolation between different species of Darwin's finches.

Describe a situation where biologists using the phylogenetic species concept and those using the biological species concept would reach different conclusions on whether two populations represent different species.

The Whale and the Virus: How Scientists Study Evolution

From Natural Philosophy to Darwin: a Brief History of Evolutionary Ideas

What the Rocks Say: How Geology and Paleontology Reveal the History of Life

The Tree of Life: How Biologists Use Phylogeny to Reconstruct the Deep Past

Raw Material: Heritable Variation Among Individuals

The Ways of Change: Drift and Selection

Beyond Alleles: Quantitative Genetics and the Evolution of Phenotypes

The History in Our Genes

From Genes to Traits: the Evolution of Genetic Networks and Development

Natural Selection: Empirical Studies in the Wild

Sex: Causes and Consequences

After Conception: the Evolution of Life History and Parental Care

Macroevolution: the Long Run

Intimate Partnerships: How Species Adapt to Each Other

Brains and Behavior

Human Evolution: a New Kind of Ape

Evolutionary Medicine

Filters