Question 1

Which of the following best describes a group of Rana pipens living in a pond during the spring months?

Accepted Answer

A)  a community 
B)  an ecosystem 
C)  a habitat 
D)  a population 
E)  a niche 
A)  a community 
B)  an ecosystem 
C)  a habitat 
D)  a population 
E)  a niche

Question 2

All of the individuals of the same species that inhabit the same place at the same time are known as:

Accepted Answer

A)  a gene pool. 
B)  an ecosystem. 
C)  a community. 
D)  a population. 
E)  a genome. 
A)  a gene pool. 
B)  an ecosystem. 
C)  a community. 
D)  a population. 
E)  a genome.

Question 3

With respect to the alleles for sickle cell anemia, which genotype(s) is (are) at a disadvantage to persons residing in tropical areas of Africa?

Accepted Answer

A)  homozygous recessive 
B)  homozygous dominant 
C)  heterozygous 
D)  both heterozygous and homozygous dominant 
E)  both homozygous dominant and homozygous recessive 
A)  homozygous recessive 
B)  homozygous dominant 
C)  heterozygous 
D)  both heterozygous and homozygous dominant 
E)  both homozygous dominant and homozygous recessive

Question 4

In the Hardy-Weinberg equation, the term q2 refers to the frequency of:

Accepted Answer

A)  the recessive allele at a given locus. 
B)  the homozygous recessive genotype at a given locus. 
C)  the recessive alleles in a given population. 
D)  the heterozygotes in a population. 
E)  the total alleles in a gene pool. 
A)  the recessive allele at a given locus. 
B)  the homozygous recessive genotype at a given locus. 
C)  the recessive alleles in a given population. 
D)  the heterozygotes in a population. 
E)  the total alleles in a gene pool.

Question 5

A commonly cited example of genetic drift has occurred within:

Accepted Answer

A)  the cheetah population. 
B)  the parasite that causes malaria. 
C)  scale-eating fish. 
D)  humans, as evidence by birth weight. 
E)  insects called water boatmen. 
A)  the cheetah population. 
B)  the parasite that causes malaria. 
C)  scale-eating fish. 
D)  humans, as evidence by birth weight. 
E)  insects called water boatmen.

Question 6

With inbreeding, one would expect to see an increase in __________ within the population.

Accepted Answer

A)  genetic drift 
B)  migration 
C)  heterozygosity 
D)  homozygosity 
E)  assortative mating 
A)  genetic drift 
B)  migration 
C)  heterozygosity 
D)  homozygosity 
E)  assortative mating

Question 7

Evolution that involves changes in allele frequencies over just a few successive generations is referred to as:

Accepted Answer

A)  natural selection. 
B)  microevolution. 
C)  macroevolution. 
D)  stabilizing selection. 
E)  directional selection. 
A)  natural selection. 
B)  microevolution. 
C)  macroevolution. 
D)  stabilizing selection. 
E)  directional selection.

Question 8

The allelle for sickle cell anemia is maintained in populations by frequency dependent selection.
_______________

Accepted Answer

A) True 
 B)False

Question 9

Bacterial populations have been exposed to an antibiotic and have developed resistance to the antibiotic over time.Would this be an example of stabilizing selection, directional selection, or disruptive selection? Explain your reasoning.

Accepted Answer

Concepts to Consider: This is

Question 10

In order for a population to meet the conditions of the Hardy-Weinberg predictions, it must:

Accepted Answer

A)  have only moderate migration in and out of the population. 
B)  have no natural selection. 
C)  have only occasional matings determined by humans. 
D)  have mating between relatives. 
E)  not be very large. 
A)  have only moderate migration in and out of the population. 
B)  have no natural selection. 
C)  have only occasional matings determined by humans. 
D)  have mating between relatives. 
E)  not be very large.

Question 11

The Hardy-Weinberg principle is applicable provided:

Accepted Answer

A)  migration is limited to adults. 
B)  migration only occurs during nonreproductive periods. 
C)  migration is limited to juveniles. 
D)  migration occurs at the beginning of the breeding season. 
E)  migration does not occur. 
A)  migration is limited to adults. 
B)  migration only occurs during nonreproductive periods. 
C)  migration is limited to juveniles. 
D)  migration occurs at the beginning of the breeding season. 
E)  migration does not occur.

Question 12

Frequency-dependent selection acts to decrease the frequency of which phenotype in a population?

Accepted Answer

A)  the least common phenotype 
B)  the phenotype at an extreme of the normal distribution 
C)  the most conspicuous phenotype 
D)  the most common phenotype 
E)  the most camouflaged phenotype 
A)  the least common phenotype 
B)  the phenotype at an extreme of the normal distribution 
C)  the most conspicuous phenotype 
D)  the most common phenotype 
E)  the most camouflaged phenotype

Question 13

Non-inbred mice had a consistently lower survival than inbred mice.
__________

Accepted Answer

A) True 
 B)False

Question 14

The presence of two or more different alleles in a population for a given locus is termed:

Accepted Answer

A)  heterozygosity. 
B)  genetic polymorphism. 
C)  polygenic stasis. 
D)  a gene pool. 
E)  frequency independent selection. 
A)  heterozygosity. 
B)  genetic polymorphism. 
C)  polygenic stasis. 
D)  a gene pool. 
E)  frequency independent selection.

Question 15

The only source of all new alleles is:

Accepted Answer

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

Question 16

Variation that does not alter the ability to survive and reproduce:

Accepted Answer

A)  is not possible with natural selection. 
B)  reduces genetic polymorphism. 
C)  is only possible for polygenic traits. 
D)  is not part of the gene pool. 
E)  is called neutral variation. 
A)  is not possible with natural selection. 
B)  reduces genetic polymorphism. 
C)  is only possible for polygenic traits. 
D)  is not part of the gene pool. 
E)  is called neutral variation.

Question 17

Mutations that are not passed on from one generation to the next:

Accepted Answer

A)  result from disruptive selection. 
B)  are balanced polymorphisms. 
C)  arise in somatic cells. 
D)  result from the founder effect. 
E)  result from genetic drift. 
A)  result from disruptive selection. 
B)  are balanced polymorphisms. 
C)  arise in somatic cells. 
D)  result from the founder effect. 
E)  result from genetic drift.

Question 18

The Hardy-Weinberg principle does not assume:

Accepted Answer

A)  no net mutations occur in a population. 
B)  a large population size. 
C)  artificial selection is occurring. 
D)  random mating is occurring. 
E)  no gene flow is occurring. 
A)  no net mutations occur in a population. 
B)  a large population size. 
C)  artificial selection is occurring. 
D)  random mating is occurring. 
E)  no gene flow is occurring.

Question 19

If individuals in the same town continue to only mate with other individuals from the same town, one would expect to see an increase in __________ within the population.

Accepted Answer

A)  genetic drift 
B)  migration 
C)  heterozygosity 
D)  homozygosity 
E)  assortative mating 
A)  genetic drift 
B)  migration 
C)  heterozygosity 
D)  homozygosity 
E)  assortative mating

Question 20

In the human species, a heterozygote advantage is demonstrated by which condition?

Accepted Answer

A)  hemophilia 
B)  sickle cell anemia 
C)  Down syndrome 
D)  Klinefelter syndrome 
E)  albinism 
A)  hemophilia 
B)  sickle cell anemia 
C)  Down syndrome 
D)  Klinefelter syndrome 
E)  albinism

Exam 19: Evolutionary Change in Populations

Which of the following best describes a group of Rana pipens living in a pond during the spring months?

All of the individuals of the same species that inhabit the same place at the same time are known as:

With respect to the alleles for sickle cell anemia, which genotype(s) is (are) at a disadvantage to persons residing in tropical areas of Africa?

In the Hardy-Weinberg equation, the term q2 refers to the frequency of:

A commonly cited example of genetic drift has occurred within:

With inbreeding, one would expect to see an increase in __________ within the population.

Evolution that involves changes in allele frequencies over just a few successive generations is referred to as:

The allelle for sickle cell anemia is maintained in populations by frequency dependent selection. _______________

Bacterial populations have been exposed to an antibiotic and have developed resistance to the antibiotic over time.Would this be an example of stabilizing selection, directional selection, or disruptive selection? Explain your reasoning.

In order for a population to meet the conditions of the Hardy-Weinberg predictions, it must:

The Hardy-Weinberg principle is applicable provided:

Frequency-dependent selection acts to decrease the frequency of which phenotype in a population?

Non-inbred mice had a consistently lower survival than inbred mice. __________

The presence of two or more different alleles in a population for a given locus is termed:

The only source of all new alleles is:

Variation that does not alter the ability to survive and reproduce:

Mutations that are not passed on from one generation to the next:

The Hardy-Weinberg principle does not assume:

If individuals in the same town continue to only mate with other individuals from the same town, one would expect to see an increase in __________ within the population.

In the human species, a heterozygote advantage is demonstrated by which condition?

A View of Life

Atoms and Molecules: the Chemical Basis of Life

The Chemistry of Life: Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp: Energy-Releasing Pathways

Photosynthesis: Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna: the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity: Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure, Growth, and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function: an Introduction

Protection, Support, and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System: Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology: Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

In the Hardy-Weinberg equation, the term q² refers to the frequency of: