Question 1

What produces gene flow?

Accepted Answer

A)  mating between populations 
B)  geographical isolation 
C)  mutation 
D)  speciation 
A)  mating between populations 
B)  geographical isolation 
C)  mutation 
D)  speciation A

Question 2

You read that the frequency of a particular disease-associated recessive allele in a population is 12%. What does that mean?

Accepted Answer

A)  12% of the population has the disease caused by that allele. 
B)  12% of the population is a carrier for that disease. 
C)  For every 100 people, there are 12 copies of the allele. 
D)  The allele is present in 12% of the cells in your body. 
A)  12% of the population has the disease caused by that allele. 
B)  12% of the population is a carrier for that disease. 
C)  For every 100 people, there are 12 copies of the allele. 
D)  The allele is present in 12% of the cells in your body. C

Question 3

Why would a scientist use DNA fingerprinting to answer a question about human migration?

Accepted Answer

A)  to determine what race a person belongs to 
B)  to determine the paternity of an individual 
C)  to determine the frequency of a particular allele in different populations 
D)  to determine whether a recessive allele gave an advantage in a particular environment 
A)  to determine what race a person belongs to 
B)  to determine the paternity of an individual 
C)  to determine the frequency of a particular allele in different populations 
D)  to determine whether a recessive allele gave an advantage in a particular environment C

Question 4

Which of these traits are explained by convergent evolution?

Accepted Answer

A)  sickle-cell anemia in areas where malaria is common 
B)  light skin color in many northern populations 
C)  short stature in natives from the island of Puka Puka 
D)  red hair among people of Irish descent 
A)  sickle-cell anemia in areas where malaria is common 
B)  light skin color in many northern populations 
C)  short stature in natives from the island of Puka Puka 
D)  red hair among people of Irish descent

Question 5

What is the evolutionary origin of light skin in humans?

Accepted Answer

A)  Light skin evolved several times in response to high ultraviolet light levels. 
B)  Light skin evolved several times in response to low ultraviolet light levels. 
C)  Light skin evolved several times in areas where there was no malaria. 
D)  Light skin evolved as an adaptation that decreased folate levels in humans. 
A)  Light skin evolved several times in response to high ultraviolet light levels. 
B)  Light skin evolved several times in response to low ultraviolet light levels. 
C)  Light skin evolved several times in areas where there was no malaria. 
D)  Light skin evolved as an adaptation that decreased folate levels in humans.

Question 6

Genealogical species are groups that have diverged from a common ancestor but aren't yet reproductively ________.

Accepted Answer

The answer of Genealogical species are groups that have diverged...

Question 7

You observe several populations of a species of wildflower in your county. Even though the climate is nearly identical in all three places, each population has distinct traits. What's the most likely cause of change when habitat is similar?

Accepted Answer

A)  a chance event in each population as the original population spread 
B)  founder effect in each population as the original population spread 
C)  sexual selection acting on each population 
D)  independent mutations arising in each population 
A)  a chance event in each population as the original population spread 
B)  founder effect in each population as the original population spread 
C)  sexual selection acting on each population 
D)  independent mutations arising in each population

Question 8

On Long Island, New York, there's a population of wall lizards that originated from a group in Italy. Several had been imported to be sold as pets many decades ago, and some escaped and started a new population in this suburban area. This is an example of

Accepted Answer

A)  genetic drift. 
B)  the founder effect. 
C)  a population bottleneck. 
D)  gene flow. 
A)  genetic drift. 
B)  the founder effect. 
C)  a population bottleneck. 
D)  gene flow.

Question 9

________ shape of humans is correlated with the humidity in the air to which the group is adapted.

Accepted Answer

The answer of ________ shape of humans is correlated with...

Question 10

What sort of fossil data would support the hypothesis of punctuated equilibrium?

Accepted Answer

A)  fossils that look alike through many layers of sediment 
B)  fossils that look very different through many layers of sediment 
C)  fossils that look alike through layers of sediment, then a layer with many new fossils 
D)  a few layers of sediment with different fossils between layers of sediment without fossils 
A)  fossils that look alike through many layers of sediment 
B)  fossils that look very different through many layers of sediment 
C)  fossils that look alike through layers of sediment, then a layer with many new fossils 
D)  a few layers of sediment with different fossils between layers of sediment without fossils

Question 11

Two unrelated individuals with the same color skin

Accepted Answer

A)  would have similar alleles for melanin production. 
B)  would have similar alleles for repetitive DNA segments. 
C)  would have similar alleles for nose shape. 
D)  would be no more likely to have similar alleles for any gene than any two individuals chosen randomly. 
A)  would have similar alleles for melanin production. 
B)  would have similar alleles for repetitive DNA segments. 
C)  would have similar alleles for nose shape. 
D)  would be no more likely to have similar alleles for any gene than any two individuals chosen randomly.

Question 12

When speciation occurs, the result is usually a dramatic change in appearance in the new species.

Accepted Answer

A) True 
 B)False

Question 13

Which one of the following shows the steps of speciation in the correct order?

Accepted Answer

A)  evolutionary changes, geographic isolation, reproductive isolation 
B)  genetic incompatibility, geographic isolation, evolutionary changes 
C)  geographic isolation, evolutionary changes, reproductive isolation 
D)  reproductive isolation, genetic incompatibility, geographic isolation 
A)  evolutionary changes, geographic isolation, reproductive isolation 
B)  genetic incompatibility, geographic isolation, evolutionary changes 
C)  geographic isolation, evolutionary changes, reproductive isolation 
D)  reproductive isolation, genetic incompatibility, geographic isolation

Question 14

After a speciation event

Accepted Answer

A)  two species have evolved that are each different from the original species. 
B)  one new species evolves, while the original species stays the same. 
C)  one new species evolves, while the original species may stay the same or evolve into something different. 
D)  one new species evolves, while the original species goes extinct. 
A)  two species have evolved that are each different from the original species. 
B)  one new species evolves, while the original species stays the same. 
C)  one new species evolves, while the original species may stay the same or evolve into something different. 
D)  one new species evolves, while the original species goes extinct.

Question 15

The ________ species concept is used by paleontologists as they compare the physical characteristics of fossils to understand human evolution.

Accepted Answer

The answer of The ________ species concept is used by...

Question 16

Which of the following is an example of behavioral isolation?

Accepted Answer

A)  A species of daisy only blooms when nights become longer than nine hours. 
B)  The offspring of horses and donkeys are sterile. 
C)  The pollen of roses isn't recognized by the eggs of morning glories. 
D)  Female spiders only mate when a male of the same species taps her web in a particular way. 
A)  A species of daisy only blooms when nights become longer than nine hours. 
B)  The offspring of horses and donkeys are sterile. 
C)  The pollen of roses isn't recognized by the eggs of morning glories. 
D)  Female spiders only mate when a male of the same species taps her web in a particular way.

Question 17

Traits acted on by sexual selection

Accepted Answer

A)  increase fertility. 
B)  occur mostly in females. 
C)  sometimes appear to have no relation to fitness. 
D)  occur in plants but not in animals. 
A)  increase fertility. 
B)  occur mostly in females. 
C)  sometimes appear to have no relation to fitness. 
D)  occur in plants but not in animals.

Question 18

When geographic isolation occurs, under what conditions might you expect the most rapid speciation?

Accepted Answer

A)  when there is similarity in the food supply in both locations 
B)  when the climate is very different in the two locations 
C)  when the species has a long generation time 
D)  when one of the two groups becomes extinct 
A)  when there is similarity in the food supply in both locations 
B)  when the climate is very different in the two locations 
C)  when the species has a long generation time 
D)  when one of the two groups becomes extinct

Question 19

What is found when alleles among different human groups are analyzed?

Accepted Answer

A)  There are no race-specific alleles and no consistent patterns of allele frequencies within racial groups. 
B)  There are a few race-specific alleles but no consistent patterns of allele frequencies within racial groups. 
C)  There are many race-specific alleles and several consistent patterns of allele frequencies within racial groups. 
D)  There are no race-specific alleles but several consistent patterns of allele frequencies within racial groups. 
A)  There are no race-specific alleles and no consistent patterns of allele frequencies within racial groups. 
B)  There are a few race-specific alleles but no consistent patterns of allele frequencies within racial groups. 
C)  There are many race-specific alleles and several consistent patterns of allele frequencies within racial groups. 
D)  There are no race-specific alleles but several consistent patterns of allele frequencies within racial groups.

Question 20

The existence of superficial differences among groups of humans is primarily due to

Accepted Answer

A)  temporal isolation. 
B)  geographic isolation. 
C)  genetic incompatibility. 
D)  behavioral isolation. 
A)  temporal isolation. 
B)  geographic isolation. 
C)  genetic incompatibility. 
D)  behavioral isolation.

Exam 12: Who Am I? Species and Races

What produces gene flow?

You read that the frequency of a particular disease-associated recessive allele in a population is 12%. What does that mean?

Why would a scientist use DNA fingerprinting to answer a question about human migration?

Which of these traits are explained by convergent evolution?

What is the evolutionary origin of light skin in humans?

Genealogical species are groups that have diverged from a common ancestor but aren't yet reproductively ________.

You observe several populations of a species of wildflower in your county. Even though the climate is nearly identical in all three places, each population has distinct traits. What's the most likely cause of change when habitat is similar?

On Long Island, New York, there's a population of wall lizards that originated from a group in Italy. Several had been imported to be sold as pets many decades ago, and some escaped and started a new population in this suburban area. This is an example of

________ shape of humans is correlated with the humidity in the air to which the group is adapted.

What sort of fossil data would support the hypothesis of punctuated equilibrium?

Two unrelated individuals with the same color skin

When speciation occurs, the result is usually a dramatic change in appearance in the new species.

Which one of the following shows the steps of speciation in the correct order?

After a speciation event

The ________ species concept is used by paleontologists as they compare the physical characteristics of fossils to understand human evolution.

Which of the following is an example of behavioral isolation?

Traits acted on by sexual selection

When geographic isolation occurs, under what conditions might you expect the most rapid speciation?

What is found when alleles among different human groups are analyzed?

The existence of superficial differences among groups of humans is primarily due to

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