Question 1

Compared to a large mainland population, genetic drift in a small island population is

Accepted Answer

A) less important because there is less variation with which to work. 
B) less important because only a few individuals do all the breeding. 
C) more important because of a smaller gene pool. 
D) more important because of the absence of competition. 
A) less important because there is less variation with which to work. 
B) less important because only a few individuals do all the breeding. 
C) more important because of a smaller gene pool. 
D) more important because of the absence of competition.

Question 2

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 3

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 4

Match each example to one of the processes below.
-Algae attach to a boat motor and are transported to a new lake where they establish a new colony.

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 5

Match each example to one of the processes below.
-An area consists of dark and light rocks. Mouse populations that live on the dark rocks tend to be darkly colored; mouse populations that live on the light rocks tend to be lightly colored.

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 6

Gene flow between two populations

Accepted Answer

A) makes the genetic composition of the two populations more similar. 
B) eliminates harmful alleles. 
C) magnifies the effects of genetic drift. 
D) creates genetic differences between the populations. 
A) makes the genetic composition of the two populations more similar. 
B) eliminates harmful alleles. 
C) magnifies the effects of genetic drift. 
D) creates genetic differences between the populations.

Question 7

Which of the following is NOT likely to be a cause of rapid evolution in a population?

Accepted Answer

A) a changing environment 
B) an organism that exhibits a rapid rate of mutation 
C) an organism that reproduces very slowly 
D) the immigration of individuals carrying a new allele that significantly increases reproductive success 
A) a changing environment 
B) an organism that exhibits a rapid rate of mutation 
C) an organism that reproduces very slowly 
D) the immigration of individuals carrying a new allele that significantly increases reproductive success

Question 8

A chance evolutionary change occurring in small populations is referred to as ________.

Accepted Answer

The answer of A chance evolutionary change occurring in small...

Question 9

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 m

Question 10

The result of convergent evolution is ________ traits.

Accepted Answer

The answer of The result of convergent evolution is ________...

Question 11

Two different species may have similar features because of

Accepted Answer

A) genetic drift. 
B) the founder effect. 
C) a bottleneck. 
D) descent from a common ancestor. 
A) genetic drift. 
B) the founder effect. 
C) a bottleneck. 
D) descent from a common ancestor.

Question 12

A fisherman catches one trout from each of two ponds. Pond A contains 100 trout and pond B contains 1,000 trout. Which population is more affected by the fisherman?

Accepted Answer

A) Pond A; the fisherman has a greater likelihood of completely removing alleles from the gene pool by taking a fish from the smaller population. 
B) Pond A; fewer fish are able to move into a small pond and find mates. 
C) Pond B; the fisherman is more likely to catch a fish that is undergoing evolution in a bigger population. 
D) Pond B; the process of evolution occurs more slowly in large populations and removing a fish speeds up the process. 
A) Pond A; the fisherman has a greater likelihood of completely removing alleles from the gene pool by taking a fish from the smaller population. 
B) Pond A; fewer fish are able to move into a small pond and find mates. 
C) Pond B; the fisherman is more likely to catch a fish that is undergoing evolution in a bigger population. 
D) Pond B; the process of evolution occurs more slowly in large populations and removing a fish speeds up the process.

Question 13

In the following figure, the flying bird moves permanently into the population shown on land. As a result, the allele frequency of A in the population changes from

Accepted Answer

A) 1 to 0.75. 
B) 0 to 0.25. 
C) 0 to 0.75. 
D) 1 to 0.25. 
A) 1 to 0.75. 
B) 0 to 0.25. 
C) 0 to 0.75. 
D) 1 to 0.25.

Question 14

Two populations of geese live near each other. As time passes, the populations are becoming more genetically alike. This is probably due to ________.

Accepted Answer

The answer of Two populations of geese live near each...

Question 15

Some finches on the Galápagos Islands eat insects, an unusual food for finches to eat. These finches

Accepted Answer

A) evolved from a lineage of birds other than finches that ate insects. 
B) learned their habits from local birds. 
C) switched to insects because they tasted better than their usual food. 
D) fill roles that birds other than finches would fill in other places. 
A) evolved from a lineage of birds other than finches that ate insects. 
B) learned their habits from local birds. 
C) switched to insects because they tasted better than their usual food. 
D) fill roles that birds other than finches would fill in other places.

Question 16

Which of the following is an example of gene flow?

Accepted Answer

A) Pollen from a population A plant lands on the same plant (mating with itself). 
B) Pollen from a population A plant lands on another population A plant. 
C) Pollen from a population A plant lands on a population B plant. 
D) Pollen from a population B plant lands on a population B plant. 
A) Pollen from a population A plant lands on the same plant (mating with itself). 
B) Pollen from a population A plant lands on another population A plant. 
C) Pollen from a population A plant lands on a population B plant. 
D) Pollen from a population B plant lands on a population B plant.

Question 17

Convergent evolution occurs when natural selection causes distantly related organisms to

Accepted Answer

A) evolve into the same species despite the fact that they are members of separate populations. 
B) merge into one continuous population because of reversals in continental drift. 
C) evolve both analogous and homologous characteristics. 
D) evolve similar structures in response to similar environmental challenges. 
A) evolve into the same species despite the fact that they are members of separate populations. 
B) merge into one continuous population because of reversals in continental drift. 
C) evolve both analogous and homologous characteristics. 
D) evolve similar structures in response to similar environmental challenges.

Question 18

Match each example to one of the processes below.
-A large boulder rolls down a mountain and kills all the flowers in its path.

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 19

Convergent evolution produces

Accepted Answer

A) genetic drift. 
B) lines of common descent. 
C) homologous characteristics. 
D) analogous characteristics. 
A) genetic drift. 
B) lines of common descent. 
C) homologous characteristics. 
D) analogous characteristics.

Question 20

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.

Exam 11: Mechanisms of Evolution

Compared to a large mainland population, genetic drift in a small island population is

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

Match each example to one of the processes below. -Algae attach to a boat motor and are transported to a new lake where they establish a new colony.

Match each example to one of the processes below. -An area consists of dark and light rocks. Mouse populations that live on the dark rocks tend to be darkly colored; mouse populations that live on the light rocks tend to be lightly colored.

Gene flow between two populations

Which of the following is NOT likely to be a cause of rapid evolution in a population?

A chance evolutionary change occurring in small populations is referred to as ________.

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.

The result of convergent evolution is ________ traits.

Two different species may have similar features because of

A fisherman catches one trout from each of two ponds. Pond A contains 100 trout and pond B contains 1,000 trout. Which population is more affected by the fisherman?

In the following figure, the flying bird moves permanently into the population shown on land. As a result, the allele frequency of A in the population changes from

Two populations of geese live near each other. As time passes, the populations are becoming more genetically alike. This is probably due to ________.

Some finches on the Galápagos Islands eat insects, an unusual food for finches to eat. These finches

Which of the following is an example of gene flow?

Convergent evolution occurs when natural selection causes distantly related organisms to

Match each example to one of the processes below. -A large boulder rolls down a mountain and kills all the flowers in its path.

Convergent evolution produces

Evolution can be described as

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

Homeostasis, Reproduction, and Development

Digestive, Muscular, and Skeletal Systems

Circulatory, Respiratory, Urinary, and Nervous Systems

Endocrine and Immune Systems

Plant Physiology

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