Question 1

If a given population has 30 RR individuals,10 Rr individuals,and 10 rr individuals,what is the allele frequency of R?

Accepted Answer

A) 0.1 
B) 0.3 
C) 0.5 
D) 0.7 
A) 0.1 
B) 0.3 
C) 0.5 
D) 0.7

Question 2

Which of the following is NOT a cause of evolution?

Accepted Answer

A) mutation 
B) gene flow 
C) stable environmental conditions 
D) sexual selection 
A) mutation 
B) gene flow 
C) stable environmental conditions 
D) sexual selection

Question 3

The wings of a bird and the wings of a bat both form from the front appendages (arms).The bird wing is covered by feathers,and the bat wing consists of a thin layer of skin stretched between the "finger" bones.Are the wings of the bird and bat homologous or analogous?

Accepted Answer

A) homologous,because they evolved from the same body part 
B) analogous,because birds' flight requires feathers and bats use skin;both are wings,but they evolved differently 
C) both;they are homologous because they both evolved from a front appendage,but analogous because they evolved differently 
D) neither,because birds and bats do not share a recent common ancestor 
A) homologous,because they evolved from the same body part 
B) analogous,because birds' flight requires feathers and bats use skin;both are wings,but they evolved differently 
C) both;they are homologous because they both evolved from a front appendage,but analogous because they evolved differently 
D) neither,because birds and bats do not share a recent common ancestor

Question 4

The following image is an example of

Accepted Answer

A) gene flow. 
B) genetic drift. 
C) natural selection. 
D) mutation. 
A) gene flow. 
B) genetic drift. 
C) natural selection. 
D) mutation.

Question 5

Several related bird species live in a desert.One species is much smaller than the other species.This species nests in holes in cacti.Because the bird is so small,it can easily squeeze between the spines of the cactus and create a well-protected nest.This is an example of

Accepted Answer

A) genetic drift. 
B) mutation. 
C) natural selection. 
D) gene flow. 
A) genetic drift. 
B) mutation. 
C) natural selection. 
D) gene flow.

Question 6

Although millions of prairie chickens once occupied Illinois,in 1993 only 50 remained.Starting in 1992,scientists moved almost 300 prairie chickens from large populations in other states to Illinois to ________ Illinois prairie chicken populations.

Accepted Answer

A) prevent the development of nonheritable mutations in 
B) introduce genetic variation back into 
C) induce stabilizing selection in 
D) cause genetic drift in 
A) prevent the development of nonheritable mutations in 
B) introduce genetic variation back into 
C) induce stabilizing selection in 
D) cause genetic drift in

Question 7

Compare and contrast bottleneck and founder effect.

Accepted Answer

Both of these processes are examples of

Question 8

Which of the following is true with regard to mutations?

Accepted Answer

A) Mutations occur in response to environmental pressures. 
B) Mutations are more common in slowly growing organisms. 
C) Mutations appear without regard to environmental pressures. 
D) Several mutations must occur at one time for a new phenotype to appear. 
A) Mutations occur in response to environmental pressures. 
B) Mutations are more common in slowly growing organisms. 
C) Mutations appear without regard to environmental pressures. 
D) Several mutations must occur at one time for a new phenotype to appear.

Question 9

Evolutionary changes occur when ________ acts upon populations containing individuals with genetic differences.

Accepted Answer

A) continental drift 
B) natural selection 
C) weather 
D) mutation 
A) continental drift 
B) natural selection 
C) weather 
D) mutation

Question 10

Two populations of mice exist: one lives in an area with light rocks and the other lives in an area of dark rocks.A dark mouse from the population living on dark rocks migrates to the area of light rocks and breeds with mice there.Will this alter the allele frequency in the population? Discuss both changes that may or may not be seen in the next generation and in following generations.

Accepted Answer

The dark colored mouse will add dark all

Question 11

New world vultures are related to raptors,while old world vultures are more closely related to storks.However,both of these birds eat carrion (decaying animals)and have a similar beak structure.Explain how this similarity in beak structures arose.

Accepted Answer

This is an example of converge

Question 12

Match each example to one of the processes below.
-Overfishing results in an endangered fish population with a very small population size.

Accepted Answer

A) genetic drift 
B) genetic bottleneck 
C) founder effect 
D) gene flow 
E) natural selection 
A) genetic drift 
B) genetic bottleneck 
C) founder effect 
D) gene flow 
E) natural selection

Question 13

Evaluate the accuracy of the following statement: Individuals evolve by becoming more adapted to their environment.Explain how you reached your conclusion.

Accepted Answer

This statement is false because individu

Question 14

Evaluate the accuracy of the following statement: The natural selection of a prey species can be altered if a new predator is introduced.Explain how you reached your conclusion.

Accepted Answer

This statement is true.A new predator ma

Question 15

Insecticides are used to kill insects.However,insecticide resistant insects are being found.What is the mechanism for this new insect trait?

Accepted Answer

A) An insect with a random mutation is not killed by the insecticide and reproduces. 
B) Exposing insects to insecticides leads to mutations,which make the insects resistant. 
C) Human interference with natural processes leads to genetic drift,which results in resistant insects. 
D) Insecticides kill all the insects in a population,and a different species of resistant insects colonizes the available resources. 
A) An insect with a random mutation is not killed by the insecticide and reproduces. 
B) Exposing insects to insecticides leads to mutations,which make the insects resistant. 
C) Human interference with natural processes leads to genetic drift,which results in resistant insects. 
D) Insecticides kill all the insects in a population,and a different species of resistant insects colonizes the available resources.

Question 16

Jean-Baptiste Lamark proposed that populations evolve when traits acquired during the lifetime of a parent are passed down to offspring.What is wrong with this proposal?

Accepted Answer

A) Only changes in the DNA sequence of an organism can be inherited.Traits acquired throughout life generally do not involve DNA. 
B) The environment chooses which traits are necessary for survival rather than the individual. 
C) Changes in a species occur at the individual level rather than at the population level. 
D) The inheritance of acquired traits would not lead to speciation because it would cause all of the individuals in a population to become more similar. 
A) Only changes in the DNA sequence of an organism can be inherited.Traits acquired throughout life generally do not involve DNA. 
B) The environment chooses which traits are necessary for survival rather than the individual. 
C) Changes in a species occur at the individual level rather than at the population level. 
D) The inheritance of acquired traits would not lead to speciation because it would cause all of the individuals in a population to become more similar.

Question 17

Evolution can be described as

Accepted Answer

A) predesigned change in the genetic characteristics of a population of organisms over time. 
B) sudden shifts in the genetic characteristics of an individual in a population. 
C) a change in the genetic characteristics of a population of organisms over time. 
D) isolation of populations due to geologic forces. 
A) predesigned change in the genetic characteristics of a population of organisms over time. 
B) sudden shifts in the genetic characteristics of an individual in a population. 
C) a change in the genetic characteristics of a population of organisms over time. 
D) isolation of populations due to geologic forces.

Question 18

Which of the following is NOT a mode of natural selection?

Accepted Answer

A) directional selection 
B) disruptive selection 
C) dormant selection 
D) stabilizing selection 
A) directional selection 
B) disruptive selection 
C) dormant selection 
D) stabilizing selection

Question 19

Match each example to one of the processes below.
-A tourist carries seeds to a new location.These seeds are able to breed with plants of the same species in this new location.

Accepted Answer

A) genetic drift 
B) genetic bottleneck 
C) founder effect 
D) gene flow 
E) natural selection 
A) genetic drift 
B) genetic bottleneck 
C) founder effect 
D) gene flow 
E) natural selection

Question 20

Both mammals and octopi have evolved similar eye structures.This is an example of

Accepted Answer

A) convergent evolution. 
B) divergent evolution. 
C) disruptive selection. 
D) directional selection. 
A) convergent evolution. 
B) divergent evolution. 
C) disruptive selection. 
D) directional selection.

If a given population has 30 RR individuals,10 Rr individuals,and 10 rr individuals,what is the allele frequency of R?

Which of the following is NOT a cause of evolution?

The wings of a bird and the wings of a bat both form from the front appendages (arms).The bird wing is covered by feathers,and the bat wing consists of a thin layer of skin stretched between the "finger" bones.Are the wings of the bird and bat homologous or analogous?

The following image is an example of

Several related bird species live in a desert.One species is much smaller than the other species.This species nests in holes in cacti.Because the bird is so small,it can easily squeeze between the spines of the cactus and create a well-protected nest.This is an example of

Although millions of prairie chickens once occupied Illinois,in 1993 only 50 remained.Starting in 1992,scientists moved almost 300 prairie chickens from large populations in other states to Illinois to ________ Illinois prairie chicken populations.

Compare and contrast bottleneck and founder effect.

Which of the following is true with regard to mutations?

Evolutionary changes occur when ________ acts upon populations containing individuals with genetic differences.

New world vultures are related to raptors,while old world vultures are more closely related to storks.However,both of these birds eat carrion (decaying animals)and have a similar beak structure.Explain how this similarity in beak structures arose.

Match each example to one of the processes below. -Overfishing results in an endangered fish population with a very small population size.

Evaluate the accuracy of the following statement: Individuals evolve by becoming more adapted to their environment.Explain how you reached your conclusion.

Evaluate the accuracy of the following statement: The natural selection of a prey species can be altered if a new predator is introduced.Explain how you reached your conclusion.

Insecticides are used to kill insects.However,insecticide resistant insects are being found.What is the mechanism for this new insect trait?

Jean-Baptiste Lamark proposed that populations evolve when traits acquired during the lifetime of a parent are passed down to offspring.What is wrong with this proposal?

Evolution can be described as

Which of the following is NOT a mode of natural selection?

Match each example to one of the processes below. -A tourist carries seeds to a new location.These seeds are able to breed with plants of the same species in this new location.

Both mammals and octopi have evolved similar eye structures.This is an example of

The Nature of Science

Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Adaptation and Species

The History of Life

Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Ecosystems

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Exam 11: Mechanisms of Evolution

If a given population has 30 RR individuals,10 Rr individuals,and 10 rr individuals,what is the allele frequency of R?

Which of the following is NOT a cause of evolution?

The wings of a bird and the wings of a bat both form from the front appendages (arms).The bird wing is covered by feathers,and the bat wing consists of a thin layer of skin stretched between the "finger" bones.Are the wings of the bird and bat homologous or analogous?

The following image is an example of

Several related bird species live in a desert.One species is much smaller than the other species.This species nests in holes in cacti.Because the bird is so small,it can easily squeeze between the spines of the cactus and create a well-protected nest.This is an example of

Although millions of prairie chickens once occupied Illinois,in 1993 only 50 remained.Starting in 1992,scientists moved almost 300 prairie chickens from large populations in other states to Illinois to ________ Illinois prairie chicken populations.

Compare and contrast bottleneck and founder effect.

Which of the following is true with regard to mutations?

Evolutionary changes occur when ________ acts upon populations containing individuals with genetic differences.

New world vultures are related to raptors,while old world vultures are more closely related to storks.However,both of these birds eat carrion (decaying animals)and have a similar beak structure.Explain how this similarity in beak structures arose.

Match each example to one of the processes below. -Overfishing results in an endangered fish population with a very small population size.

Evaluate the accuracy of the following statement: Individuals evolve by becoming more adapted to their environment.Explain how you reached your conclusion.

Evaluate the accuracy of the following statement: The natural selection of a prey species can be altered if a new predator is introduced.Explain how you reached your conclusion.

Insecticides are used to kill insects.However,insecticide resistant insects are being found.What is the mechanism for this new insect trait?

Jean-Baptiste Lamark proposed that populations evolve when traits acquired during the lifetime of a parent are passed down to offspring.What is wrong with this proposal?

Evolution can be described as

Which of the following is NOT a mode of natural selection?

Match each example to one of the processes below. -A tourist carries seeds to a new location.These seeds are able to breed with plants of the same species in this new location.

Both mammals and octopi have evolved similar eye structures.This is an example of

The Nature of Science

Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Adaptation and Species

The History of Life

Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Ecosystems

Applying the Science

Filters