Question 1

Which of the following are types of nonadaptive evolution?

Accepted Answer

A)  natural selection 
B)  bottleneck effect 
C)  founder effect 
D)  Both B and C 
E)  A, B, and C 
A)  natural selection 
B)  bottleneck effect 
C)  founder effect 
D)  Both B and C 
E)  A, B, and C

Question 2

Why are scientists concerned about the possible extinction of cheetahs more than they are concerned about the possible extinction of several similar cat species?

Accepted Answer

Cheetahs went through a bottleneck circa

Question 3

Which of the following best points to a close evolutionary relationship between two different species?

Accepted Answer

A)  Both species look highly similar. 
B)  Both species eat the same foods. 
C)  Both species live in the same habitat. 
D)  Both species have similar mating rituals. 
E)  Both species have very similar DNA. 
A)  Both species look highly similar. 
B)  Both species eat the same foods. 
C)  Both species live in the same habitat. 
D)  Both species have similar mating rituals. 
E)  Both species have very similar DNA.

Question 4

Frog species mate at different times of the year.This is an example of which type of reproductive isolation?

Accepted Answer

A)  postzygotic isolation 
B)  gametic isolation 
C)  behavioral isolation 
D)  temporal isolation 
E)  mechanical isolation 
A)  postzygotic isolation 
B)  gametic isolation 
C)  behavioral isolation 
D)  temporal isolation 
E)  mechanical isolation

Question 5

Incompatibility of mating organs is an example of which type of reproductive isolation?

Accepted Answer

A)  postzygotic isolation 
B)  gametic isolation 
C)  behavioral isolation 
D)  temporal isolation 
E)  mechanical isolation 
A)  postzygotic isolation 
B)  gametic isolation 
C)  behavioral isolation 
D)  temporal isolation 
E)  mechanical isolation

Question 6

Gene flow can be described as changes in allele frequency due to

Accepted Answer

A)  populations mating with other populations. 
B)  mating within an isolated population. 
C)  populations undergoing natural selection. 
D)  nonrandom mating of the population. 
E)  mutation. 
A)  populations mating with other populations. 
B)  mating within an isolated population. 
C)  populations undergoing natural selection. 
D)  nonrandom mating of the population. 
E)  mutation.

Question 7

Which bird is thought to be the common ancestor of the Galápagos finches?

Accepted Answer

A)  the warbler finch 
B)  the large ground finch 
C)  the cactus finch 
D)  the blue-black grassquit 
E)  the mangrove finch 
A)  the warbler finch 
B)  the large ground finch 
C)  the cactus finch 
D)  the blue-black grassquit 
E)  the mangrove finch

Question 8

Red-cockaded woodpeckers live in mature open pine forest with little understory.One aspect of managing this endangered species is trying to connect isolated populations with corridors of appropriate habitat.Why is this important?

Accepted Answer

Isolated populations are subject to gene

Question 9

List at least five ways that two species may be reproductively isolated from each other.

Accepted Answer

ecological isolation
temporal

Question 10

The very limited gene pool of wild cheetahs is an example of

Accepted Answer

A)  natural selection. 
B)  founder effect. 
C)  the bottleneck effect. 
D)  mate selection. 
E)  evolutionary decline. 
A)  natural selection. 
B)  founder effect. 
C)  the bottleneck effect. 
D)  mate selection. 
E)  evolutionary decline.

Question 11

Allele frequencies of a population can change by

Accepted Answer

A)  natural selection. 
B)  genetic drift. 
C)  mutations in the gene pool. 
D)  founder effect. 
E)  All of the above. 
A)  natural selection. 
B)  genetic drift. 
C)  mutations in the gene pool. 
D)  founder effect. 
E)  All of the above.

Question 12

Evolution may best be explained as a

Accepted Answer

A)  change in the frequency of proteins in a population over time. 
B)  change in the frequency of alleles in a population over time. 
C)  change in the number of individuals in a population over time. 
D)  change in the proportion of males to females in a population over time. 
E)  change in the birth rate in a population over time. 
A)  change in the frequency of proteins in a population over time. 
B)  change in the frequency of alleles in a population over time. 
C)  change in the number of individuals in a population over time. 
D)  change in the proportion of males to females in a population over time. 
E)  change in the birth rate in a population over time.

Question 13

A population of Australian wallabies is found to have many more homozygous individuals than expected.What does this result indicate?

Accepted Answer

A)  Inbreeding is likely occurring. 
B)  The population size is very large. 
C)  The population is likely to be healthy. 
D)  The population is likely to be healthy but may not remain healthy for much longer. 
E)  Allelic diversity is high. 
A)  Inbreeding is likely occurring. 
B)  The population size is very large. 
C)  The population is likely to be healthy. 
D)  The population is likely to be healthy but may not remain healthy for much longer. 
E)  Allelic diversity is high.

Question 14

Which of the following is likely to result in the GREATEST loss of allelic diversity?

Accepted Answer

A)  losing 25% of a population of 100 individuals 
B)  losing 50% of a population of 100 individuals 
C)  losing 25% of a population of 1000 individuals 
D)  losing 50% of a population of 1000 individuals 
E)  All of the above. 
A)  losing 25% of a population of 100 individuals 
B)  losing 50% of a population of 100 individuals 
C)  losing 25% of a population of 1000 individuals 
D)  losing 50% of a population of 1000 individuals 
E)  All of the above.

Question 15

An island has a population of 100,000 moths that has 98% gray individuals and 2% black individuals.Generation after generation,this ratio and population size remains basically the same.After a hurricane,15,000 black moths are blown onto the island.After 2 years,

Accepted Answer

A)  the percentage of gray moths will increase. 
B)  all of the black moths will be killed off. 
C)  the black moths will emigrate back to their original habitat. 
D)  the percentage of black moths will increase. 
E)  all the white moths will be killed off. 
A)  the percentage of gray moths will increase. 
B)  all of the black moths will be killed off. 
C)  the black moths will emigrate back to their original habitat. 
D)  the percentage of black moths will increase. 
E)  all the white moths will be killed off.

Question 16

Which population would have the most loss of diversity from a genetic bottleneck?

Accepted Answer

A) 100 elephants 
B) 1000 mice 
C) 10³ E.coli 
D) 10 cats 
E) 100 humans 
A) 100 elephants 
B) 1000 mice 
C) 10³ E.coli 
D) 10 cats 
E) 100 humans

Question 17

This mechanism is NOT responsible for random changes in allele frequency in the gene pool of a population.
A) natural selection
B) genetic drift
C) mutations in the gene pool
D) founder effect
E) bottlenecks

Accepted Answer

The answer of This mechanism is NOT responsible for random...

Question 18

Which of the following populations is most likely to survive changing environmental conditions?

Accepted Answer

A)  a population of 50 individuals with low allelic diversity 
B)  a population of 50 individuals with high allelic diversity 
C)  a population of 1000 individuals with low allelic diversity 
D)  a population of 1000 individuals with high allelic diversity 
E)  allelic diversity does not matter, only the size of the population 
A)  a population of 50 individuals with low allelic diversity 
B)  a population of 50 individuals with high allelic diversity 
C)  a population of 1000 individuals with low allelic diversity 
D)  a population of 1000 individuals with high allelic diversity 
E)  allelic diversity does not matter, only the size of the population

Question 19

Tay Sachs disease is caused by a recessive mutation on chromosome 15,and 1 of every 27 members of the Old Order Amish community of Pennsylvania carry a recessive allele.What is the chance that an Old Order Amish man who carries the allele will have a child with Tay Sachs? (Remember,the community restricts marriage to other members of the community.)

Accepted Answer

There is a 1/27 chance that the man's wi

Question 20

Why is mitochondrial DNA slower to change than nuclear DNA?

Accepted Answer

Nuclear DNA is sorted and shuf

Exam 15: A: Nonadaptive Evolution and Speciation Urban Evolution

Which of the following are types of nonadaptive evolution?

Why are scientists concerned about the possible extinction of cheetahs more than they are concerned about the possible extinction of several similar cat species?

Which of the following best points to a close evolutionary relationship between two different species?

Frog species mate at different times of the year.This is an example of which type of reproductive isolation?

Incompatibility of mating organs is an example of which type of reproductive isolation?

Gene flow can be described as changes in allele frequency due to

Which bird is thought to be the common ancestor of the Galápagos finches?

Red-cockaded woodpeckers live in mature open pine forest with little understory.One aspect of managing this endangered species is trying to connect isolated populations with corridors of appropriate habitat.Why is this important?

List at least five ways that two species may be reproductively isolated from each other.

The very limited gene pool of wild cheetahs is an example of

Allele frequencies of a population can change by

Evolution may best be explained as a

A population of Australian wallabies is found to have many more homozygous individuals than expected.What does this result indicate?

Which of the following is likely to result in the GREATEST loss of allelic diversity?

An island has a population of 100,000 moths that has 98% gray individuals and 2% black individuals.Generation after generation,this ratio and population size remains basically the same.After a hurricane,15,000 black moths are blown onto the island.After 2 years,

Which population would have the most loss of diversity from a genetic bottleneck?

This mechanism is NOT responsible for random changes in allele frequency in the gene pool of a population. A) natural selection B) genetic drift C) mutations in the gene pool D) founder effect E) bottlenecks

Which of the following populations is most likely to survive changing environmental conditions?

Why is mitochondrial DNA slower to change than nuclear DNA?

The Process of Science Java Report

Chemistry and Molecules of Life Mission to Mars

Cell Function and Structure Wonder Drug

Nutrition,metabolism,enzymes the Peanut Butter Project

Energy Flow and Photosynthesis the Future of Fuel

Dietary Energy and Cellular Respiration Supersize Me

DNA Structure and Replication Biologically Unique

Genes to Proteins Medicine From Milk

Cell Division and Mitosis Natures Pharmacy

Mutations and Cancer Fighting Fate

Single-Gene Inheritance and Meiosis Rock for a Cause

Complex Inheritance Qa: Genetics

Stem Cells and Cell Differentiation Grow Your Own

Natural Selection and Adaptation Bugs That Resist Drugs

B: Nonadaptive Evolution and Speciation Urban Evolution

Evidence for Evolution a Fish With Fingers

Life on Earth Qa: Evolution

Prokaryotic Diversity Lost City

A: Eukaryotic Diversity Rain Forest Riches

B: Eukaryotic Diversity Rain Forest Riches

Human Evolution Skin Deep

A: Population Ecology on the Tracks of Wolves and Moose

B: Population Ecology on the Tracks of Wolves and Moose

A: Community Ecology Whats Happening to Honey Bees

B: Community Ecology Whats Happening to Honey Bees

A: Ecosystem Ecology the Heat Is on

B: Ecosystem Ecology the Heat Is on

A: Sustainability the Makings of a Green City

B: Sustainability the Makings of a Green City

A: Overview of Physiology Man Versus Mountain

B: Overview of Physiology Man Versus Mountain

Digestive System Drastic Measures

A: Cardiovascular System Death in Bogalusa

B: Cardiovascular System Death in Bogalusa

Respiratory System Peak Performance

A: Central Nervous System Smoke on the Brain

B: Central Nervous System Smoke on the Brain

Reproductive System Too Many Multiples

Immune System Viral Mysteries

A: Plant Physiology

B: Plant Physiology

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