Question 1

Human MN blood types illustrate the Hardy Weinberg principle because these blood type antigens are not subject to inheritance. 
______________

Accepted Answer

A) True 
 B)False

Question 2

Under which mating condition is the Hardy-Weinberg principle applicable?

Accepted Answer

A)  Matings are nonrandom. 
B)  Matings between individuals are random. 
C)  Matings between families occur preferentially. 
D)  Matings between individuals of different genotypes occur preferentially. 
E)  Matings between individuals of the same genotypes occur preferentially. 
A)  Matings are nonrandom. 
B)  Matings between individuals are random. 
C)  Matings between families occur preferentially. 
D)  Matings between individuals of different genotypes occur preferentially. 
E)  Matings between individuals of the same genotypes occur preferentially.

Question 3

A population in which the allele and genotype frequencies do not change over time is said to be in:

Accepted Answer

A)  genetic stasis. 
B)  allele balance. 
C)  genetic equilibrium. 
D)  population stability. 
E)  phenotype equilibrium. 
A)  genetic stasis. 
B)  allele balance. 
C)  genetic equilibrium. 
D)  population stability. 
E)  phenotype equilibrium.

Question 4

Which is the correct equation for the Hardy-Weinberg principle?

Accepted Answer

A)  p 2 + 2 pq 2 + q 2 + q 2 = 100 
B)  2 p 2 + 2 pq + 2 q 2 = 1000 
C)  p 2 + 2 p + 2 q + q 2 = 1 
D)  p 2 − 2 pq + q 2 = 1 
E)  p 2 + 2 pq + q 2 = 1 
A)  p 2 + 2 pq 2 + q 2 + q 2 = 100 
B)  2 p 2 + 2 pq + 2 q 2 = 1000 
C)  p 2 + 2 p + 2 q + q 2 = 1 
D)  p 2 − 2 pq + q 2 = 1 
E)  p 2 + 2 pq + q 2 = 1

Question 5

What is the only source of all new alleles?

Accepted Answer

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

Question 6

If a population of 2000 individuals has 120 aa genotypes, what would the genotype frequency of aa be?

Accepted Answer

A)  0.006 
B)  0.06 
C)  0.6 
D)  1.6 
E)  16 
A)  0.006 
B)  0.06 
C)  0.6 
D)  1.6 
E)  16

Question 7

The common yarrow grows to different heights in response to different climates and different elevations. This is a classic example of:

Accepted Answer

A)  mutation. 
B)  genetic drift. 
C)  natural selection. 
D)  neutral variation. 
E)  geographic variation. 
A)  mutation. 
B)  genetic drift. 
C)  natural selection. 
D)  neutral variation. 
E)  geographic variation.

Question 8

Differentiate between genotype, phenotype, and allele frequencies.

Accepted Answer

Genotype frequency is the proportion of

Question 9

Discuss how two of the following alter allele frequencies in populations: nonrandom mating, genetic drift, gene flow, and natural selection.

Accepted Answer

Gene flow can alter allele frequencies i

Question 10

If environmental conditions continue to favor one specific group of homozygotes over the rest of the population, then ____ selection will eventually occur.

Accepted Answer

A)  stabilizing 
B)  directional 
C)  disruptive 
D)  abnormal 
E)  frequency-dependent 
A)  stabilizing 
B)  directional 
C)  disruptive 
D)  abnormal 
E)  frequency-dependent

Question 11

Which of the following can produce a population of individuals with a relatively high frequency of a harmful or rare allele?

Accepted Answer

A)  mutation 
B)  natural selection 
C)  the founder effect 
D)  artificial selection 
E)  migration between large populations 
A)  mutation 
B)  natural selection 
C)  the founder effect 
D)  artificial selection 
E)  migration between large populations

Question 12

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 13

List the five conditions that must be met in order to satisfy the predictions of the Hardy-Weinberg principle.

Accepted Answer

1. Random mating 
2. No mutati

Question 14

In a certain population, the allele frequencies of the M and N blood group alleles are 0.6 and 0.4, respectively. How many of a population of 500 would be expected to have MN blood type if the population is in genetic equilibrium for the MN locus?

Accepted Answer

A)  200 
B)  220 
C)  240 
D)  260 
E)  300 
A)  200 
B)  220 
C)  240 
D)  260 
E)  300

Question 15

Which is defined by the presence of two or more different alleles in a population for a given locus?

Accepted Answer

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

Question 16

Which is an example of nonrandom mating?

Accepted Answer

A)  Selecting a mate by their genotype 
B)  Selecting a mate by their phenotype 
C)  Selecting a mate by their species richness 
D)  Selecting a mate by their family relationship 
E)  Selecting a mate by their success of defeating another 
A)  Selecting a mate by their genotype 
B)  Selecting a mate by their phenotype 
C)  Selecting a mate by their species richness 
D)  Selecting a mate by their family relationship 
E)  Selecting a mate by their success of defeating another

Question 17

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

Question 18

If the allele or genotype frequencies deviate from the values predicted by the Hardy-Weinberg principle, the population is:

Accepted Answer

A)  growing. 
B)  mutating. 
C)  migrating. 
D)  evolving. 
E)  at equilibrium. 
A)  growing. 
B)  mutating. 
C)  migrating. 
D)  evolving. 
E)  at equilibrium.

Question 19

Why is the Hardy-Weinberg principle useful to biologists?

Accepted Answer

A)  It describes most populations. 
B)  It proves that Mendel was correct for populations. 
C)  It explains the existence of variation in populations. 
D)  It explains the existence of a large number of species. 
E)  It identifies those factors that can change allele or genotype frequencies. 
A)  It describes most populations. 
B)  It proves that Mendel was correct for populations. 
C)  It explains the existence of variation in populations. 
D)  It explains the existence of a large number of species. 
E)  It identifies those factors that can change allele or genotype frequencies.

Question 20

For a particular gene, the frequency of the dominant allele H is 0.65. The total population size is 10,000 individuals. In addition, the homozygous recessive condition results in living but sterile offspring. 
Fill in the table of values for the generations indicated: 
   Does this population exhibit Hardy-Weinberg equilibrium? Why or why not? If not, what assumptions does the Hardy-Weinberg principle make that appear to be inapplicable in this situation?

Accepted Answer

Concepts to Consider: The Hardy-Weinberg

Exam 19: Evolutionary Change in Populations

Human MN blood types illustrate the Hardy Weinberg principle because these blood type antigens are not subject to inheritance. ______________

Under which mating condition is the Hardy-Weinberg principle applicable?

A population in which the allele and genotype frequencies do not change over time is said to be in:

Which is the correct equation for the Hardy-Weinberg principle?

What is the only source of all new alleles?

If a population of 2000 individuals has 120 aa genotypes, what would the genotype frequency of aa be?

The common yarrow grows to different heights in response to different climates and different elevations. This is a classic example of:

Differentiate between genotype, phenotype, and allele frequencies.

Discuss how two of the following alter allele frequencies in populations: nonrandom mating, genetic drift, gene flow, and natural selection.

If environmental conditions continue to favor one specific group of homozygotes over the rest of the population, then ____ selection will eventually occur.

Which of the following can produce a population of individuals with a relatively high frequency of a harmful or rare allele?

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

List the five conditions that must be met in order to satisfy the predictions of the Hardy-Weinberg principle.

In a certain population, the allele frequencies of the M and N blood group alleles are 0.6 and 0.4, respectively. How many of a population of 500 would be expected to have MN blood type if the population is in genetic equilibrium for the MN locus?

Which is defined by the presence of two or more different alleles in a population for a given locus?

Which is an example of nonrandom mating?

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?

If the allele or genotype frequencies deviate from the values predicted by the Hardy-Weinberg principle, the population is:

Why is the Hardy-Weinberg principle useful to biologists?

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

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