Question 1

In which of the following sexually reproducing populations does the Hardy-Weinberg principle of genetic equilibrium tell us what to expect?

Accepted Answer

A)  in a population that is decreasing with each generation 
B)  in a population that is increasing with each generation 
C)  in a population that is evolving 
D)  in a population that is not evolving 
A)  in a population that is decreasing with each generation 
B)  in a population that is increasing with each generation 
C)  in a population that is evolving 
D)  in a population that is not evolving

Question 2

Which of the following best characterize mutations that confer no apparent selective advantage or disadvantage in a particular environment?

Accepted Answer

A)  random mutations 
B)  deleterious mutations 
C)  neutral mutations 
D)  stabilizing mutations 
A)  random mutations 
B)  deleterious mutations 
C)  neutral mutations 
D)  stabilizing mutations

Question 3

Intermediate forms are often absent in characters showing qualitative variation.

Accepted Answer

A) True 
 B)False

Question 4

Studies of chromosomal and mitochondrial DNA suggest that every locus exhibits some variability in its nucleotide sequence. Which of the following does NOT apply in those studies?

Accepted Answer

A)  Every locus exhibits some variability in its nucleotide sequence among individuals from a single population. 
B)  Every locus exhibits some variability in its nucleotide sequence between populations of the same species. 
C)  Every locus exhibits some variability in its nucleotide sequence between related species. 
D)  Every locus exhibits some variability in its nucleotide sequence within an individual. 
A)  Every locus exhibits some variability in its nucleotide sequence among individuals from a single population. 
B)  Every locus exhibits some variability in its nucleotide sequence between populations of the same species. 
C)  Every locus exhibits some variability in its nucleotide sequence between related species. 
D)  Every locus exhibits some variability in its nucleotide sequence within an individual.

Question 5

In a colony of 100 guinea pigs, 16 show the recessive trait of bristly hair. What is the percentage of heterozygotes in the population?

Accepted Answer

A)  24% 
B)  36% 
C)  48% 
D)  52% 
A)  24% 
B)  36% 
C)  48% 
D)  52%

Question 6

Match the Hardy-Weinberg factor with the correct genetic designation.
-p + q

Accepted Answer

A) frequency of heterozygotes 
B) frequency of the dominant allele 
C) frequency of the recessive allele 
D) the total gene pool for a gene with two alleles 
E) frequency of homozygous recessive genotypes
F)frequency of homozygous dominant genotypes 
A) frequency of heterozygotes 
B) frequency of the dominant allele 
C) frequency of the recessive allele 
D) the total gene pool for a gene with two alleles 
E) frequency of homozygous recessive genotypes
F)frequency of homozygous dominant genotypes

Question 7

Match the Hardy-Weinberg factor with the correct genetic designation.
-p2

Accepted Answer

A) frequency of heterozygotes 
B) frequency of the dominant allele 
C) frequency of the recessive allele 
D) the total gene pool for a gene with two alleles 
E) frequency of homozygous recessive genotypes
F)frequency of homozygous dominant genotypes 
A) frequency of heterozygotes 
B) frequency of the dominant allele 
C) frequency of the recessive allele 
D) the total gene pool for a gene with two alleles 
E) frequency of homozygous recessive genotypes
F)frequency of homozygous dominant genotypes

Question 8

Which of the following is NOT an agent of microevolutionary change?

Accepted Answer

A)  mutation 
B)  gene flow 
C)  random mating 
D)  genetic drift 
A)  mutation 
B)  gene flow 
C)  random mating 
D)  genetic drift

Question 9

What is the evolution of the humpback whale an example of?

Accepted Answer

A)  homology 
B)  microevolution 
C)  macroevolution 
D)  analogy 
A)  homology 
B)  microevolution 
C)  macroevolution 
D)  analogy

Question 10

What does natural selection result in?

Accepted Answer

A)  adaptation 
B)  mutation 
C)  a new species 
D)  genetic drift 
A)  adaptation 
B)  mutation 
C)  a new species 
D)  genetic drift

Question 11

Which of the following processes results in microevolution without any form of natural selection?

Accepted Answer

A)  genetic drift 
B)  mutation 
C)  development of new characteristics during an individual's lifetime 
D)  genetic variation 
A)  genetic drift 
B)  mutation 
C)  development of new characteristics during an individual's lifetime 
D)  genetic variation

Question 12

How could parasitism by wasps and feeding by birds result in a higher percentage of galls (made by gall-making flies) of medium size rather than small or large galls (or an even percentage of all sizes of galls)?

Accepted Answer

If wasps preferentially parasitize fly l

Question 13

In a colony of 100 guinea pigs, 16 show the recessive trait of bristly hair. What is the frequency of the recessive allele in the population?

Accepted Answer

A)  0.400 
B)  0.160 
C)  0.040 
D)  0.016 
A)  0.400 
B)  0.160 
C)  0.040 
D)  0.016

Question 14

What is balanced polymorphism in a population likely the result of?

Accepted Answer

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

Question 15

Match the Hardy-Weinberg factor with the correct genetic designation.
-q

Accepted Answer

A) frequency of heterozygotes 
B) frequency of the dominant allele 
C) frequency of the recessive allele 
D) the total gene pool for a gene with two alleles 
E) frequency of homozygous recessive genotypes
F)frequency of homozygous dominant genotypes 
A) frequency of heterozygotes 
B) frequency of the dominant allele 
C) frequency of the recessive allele 
D) the total gene pool for a gene with two alleles 
E) frequency of homozygous recessive genotypes
F)frequency of homozygous dominant genotypes

Question 16

New traits arise from scratch through the formation of a new gene.

Accepted Answer

A) True 
 B)False

Question 17

Match each of the following definitions with the correct agent.
-random changes in allele frequencies caused by chance events

Accepted Answer

A) gene flow 
B) non-random mating 
C) genetic drift 
D) mutation 
E) natural selection 
A) gene flow 
B) non-random mating 
C) genetic drift 
D) mutation 
E) natural selection

Question 18

Genetic drift can eliminate alleles from a population more quickly than natural selection.

Accepted Answer

A) True 
 B)False

Question 19

Natural selection results in organisms perfectly adapted to their environments.

Accepted Answer

A) True 
 B)False

Question 20

Imagine that the only survivors of a colony on Venus are a man and a woman, who happen to be both originally from southern Ukraine. Which of the following will their descendants show?

Accepted Answer

A)  genetic drift 
B)  punctuated equilibrium 
C)  excessive mutation 
D)  heterozygote advantage 
A)  genetic drift 
B)  punctuated equilibrium 
C)  excessive mutation 
D)  heterozygote advantage

Exam 17: Microevolution: Changes Within Populations

In which of the following sexually reproducing populations does the Hardy-Weinberg principle of genetic equilibrium tell us what to expect?

Which of the following best characterize mutations that confer no apparent selective advantage or disadvantage in a particular environment?

Intermediate forms are often absent in characters showing qualitative variation.

Studies of chromosomal and mitochondrial DNA suggest that every locus exhibits some variability in its nucleotide sequence. Which of the following does NOT apply in those studies?

In a colony of 100 guinea pigs, 16 show the recessive trait of bristly hair. What is the percentage of heterozygotes in the population?

Match the Hardy-Weinberg factor with the correct genetic designation. -p + q

Match the Hardy-Weinberg factor with the correct genetic designation. -p2

Which of the following is NOT an agent of microevolutionary change?

What is the evolution of the humpback whale an example of?

What does natural selection result in?

Which of the following processes results in microevolution without any form of natural selection?

How could parasitism by wasps and feeding by birds result in a higher percentage of galls (made by gall-making flies) of medium size rather than small or large galls (or an even percentage of all sizes of galls)?

In a colony of 100 guinea pigs, 16 show the recessive trait of bristly hair. What is the frequency of the recessive allele in the population?

What is balanced polymorphism in a population likely the result of?

Match the Hardy-Weinberg factor with the correct genetic designation. -q

New traits arise from scratch through the formation of a new gene.

Match each of the following definitions with the correct agent. -random changes in allele frequencies caused by chance events

Genetic drift can eliminate alleles from a population more quickly than natural selection.

Natural selection results in organisms perfectly adapted to their environments.

Imagine that the only survivors of a colony on Venus are a man and a woman, who happen to be both originally from southern Ukraine. Which of the following will their descendants show?

Light and Life

The Cell: an Overview

Energy and Enzymes

Cell Membranes and Signaling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

The Chromosomal Basis of Mendelian Inheritance

Genetic Linkage, Sex-Linkage, and Other Non-Mendelian Inheritance Mechanisms

DNA Structure, Replication, and Repair

Gene Structure Expression, and Mutation

Regulation of Gene Expression

Dna Technologies

Genomes

Evolution: the Development of the Theory

Speciation and Macroevolution

Systematics and Phylogenetics: Revealing the Tree of Life

Humans and Evolution

Defining Life and Its Origins

Viruses, Viroids, and Prions: Infectious Biological Particles

Bacteria and Archaea

Protists

Fungi

Plants

Animals

Conservation of Biodiversity

Population Ecology

Species Interactions and Community Ecology

Ecosystems

Animal Behaviour

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Animal Nutrition

Gas Exchange: the Respiratory System

Internal Transport: the Circulatory System

Regulation of the Internal Environment: Water, Solutes, and Temperature

Control of Animal Processes: Endocrine Control

Animal Reproduction

Control of Animal Processes: Neural Control

Muscles, Skeletons, and Body Movements

Filters

Match the Hardy-Weinberg factor with the correct genetic designation. -p²