Question 1

The two major forces contributing to allopatric speciation are:

Accepted Answer

A)  mutation and natural selection. 
B)  natural selection and migration. 
C)  nonrandom mating and migration. 
D)  natural selection and genetic drift. 
E)  genetic drift and mutation. 
A)  mutation and natural selection. 
B)  natural selection and migration. 
C)  nonrandom mating and migration. 
D)  natural selection and genetic drift. 
E)  genetic drift and mutation.

Question 2

The evolutionary species concept states that for a population to be declared a separate species:

Accepted Answer

A)  it must have diverged significantly from other populations. 
B)  it must be morphologically different from any other population. 
C)  it must not interbreed with any other population. 
D)  it must occupy a different niche than any other population. 
E)  it must have undergone natural selection sometime in its history. 
A)  it must have diverged significantly from other populations. 
B)  it must be morphologically different from any other population. 
C)  it must not interbreed with any other population. 
D)  it must occupy a different niche than any other population. 
E)  it must have undergone natural selection sometime in its history.

Question 3

Sexual isolation occurs when the egg proteins bind only complementary molecules on species specific sperm.
____________

Accepted Answer

A) True 
 B)False

Question 4

Based on the data in the figure, a likely reason for speciation between these two sympatric species of frogs is:

Accepted Answer

A)  allopolyploidy. 
B)  mechanical isolation. 
C)  habitat isolation. 
D)  temporal isolation. 
E)  hybrid inviability. 
A)  allopolyploidy. 
B)  mechanical isolation. 
C)  habitat isolation. 
D)  temporal isolation. 
E)  hybrid inviability.

Question 5

Allopolyploidy is a significant factor in the evolution of:

Accepted Answer

A)  bacteria. 
B)  animals. 
C)  protozoa. 
D)  fungi. 
E)  flowering plants. 
A)  bacteria. 
B)  animals. 
C)  protozoa. 
D)  fungi. 
E)  flowering plants.

Question 6

When larval or juvenile characteristics are retained in the adult stage, it is known as:

Accepted Answer

A)  paedomorphosis. 
B)  allometry. 
C)  adaptive radiation. 
D)  stasis. 
E)  preadaptation. 
A)  paedomorphosis. 
B)  allometry. 
C)  adaptive radiation. 
D)  stasis. 
E)  preadaptation.

Question 7

One group of fruit flies reproduces in August and one group reproduces in September.Which of the following mechanisms is preventing them from cross breeding?

Accepted Answer

A)  hybrid sterility 
B)  genetic isolation 
C)  sexual isolation 
D)  mechanical isolation 
E)  temporal isolation 
A)  hybrid sterility 
B)  genetic isolation 
C)  sexual isolation 
D)  mechanical isolation 
E)  temporal isolation

Question 8

Differentiate between macroevolution, microevolution, and speciation.

Accepted Answer

Macroevolution refers to large scale phe

Question 9

Sympatric speciation is the most common method of speciation and accounts for almost all evolution of new animal species.

Accepted Answer

A) True 
 B)False

Question 10

Humans are an example of __________ species.

Accepted Answer

A)  a genetic 
B)  an ecological 
C)  a morphological 
D)  a biological 
E)  an evolutionary 
A)  a genetic 
B)  an ecological 
C)  a morphological 
D)  a biological 
E)  an evolutionary

Question 11

The sympatric speciation of Hawthorn and apple maggot flies:

Accepted Answer

A)  has occurred in part because the adult flies emerge at different times of the season. 
B)  has been linked to allopolyploidy. 
C)  has occurred as a result of mutation and speciation within the host species. 
D)  has resulted in subtle but distinctive changes in the physical appearance of the two flies. 
E)  has occurred because of a geographic barrier 
A)  has occurred in part because the adult flies emerge at different times of the season. 
B)  has been linked to allopolyploidy. 
C)  has occurred as a result of mutation and speciation within the host species. 
D)  has resulted in subtle but distinctive changes in the physical appearance of the two flies. 
E)  has occurred because of a geographic barrier

Question 12

An individual adaptive zone can be occupied by how many different species?

Accepted Answer

A)  one 
B)  two 
C)  hundreds 
D)  thousands 
E)  an infinite number 
A)  one 
B)  two 
C)  hundreds 
D)  thousands 
E)  an infinite number

Question 13

The prevention of genetic exchange between two species because they reproduce at different times of the day or year is called:

Accepted Answer

A)  hybrid sterility. 
B)  genetic isolation. 
C)  sexual isolation. 
D)  mechanical isolation. 
E)  temporal isolation. 
A)  hybrid sterility. 
B)  genetic isolation. 
C)  sexual isolation. 
D)  mechanical isolation. 
E)  temporal isolation.

Question 14

If a population of allopolyploids were to evolve in an area, what are possible outcomes for this new species?

Accepted Answer

Concepts to Consider: The new species ma

Question 15

Hybrid breakdown is characterized by:

Accepted Answer

A)  sterility of the progeny of hybrid individuals. 
B)  sterility of hybrid adults. 
C)  death during pregnancy of hybrid females. 
D)  death during early life of hybrid embryos. 
E)  early death of hybrid embryos. 
A)  sterility of the progeny of hybrid individuals. 
B)  sterility of hybrid adults. 
C)  death during pregnancy of hybrid females. 
D)  death during early life of hybrid embryos. 
E)  early death of hybrid embryos.

Question 16

Figure 20-1
Use the figure to answer the corresponding question(s).  
-Variations in rates of growth for different parts of the body are referred to as:

Accepted Answer

A)  allometric growth patterns. 
B)  adaptive growth patterns. 
C)  allopatric growth patterns. 
D)  allopolyploidy. 
E)  preadaptations. 
A)  allometric growth patterns. 
B)  adaptive growth patterns. 
C)  allopatric growth patterns. 
D)  allopolyploidy. 
E)  preadaptations.

Question 17

__________ would prevent interbreeding between two species of fish living in the same habitat.

Accepted Answer

A)  Sympatric isolating mechanisms 
B)  Equilibrium isolating mechanisms 
C)  Reproductive isolating mechanisms 
D)  Allopatric isolating mechanisms 
E)  Preadaptive isolating mechanisms 
A)  Sympatric isolating mechanisms 
B)  Equilibrium isolating mechanisms 
C)  Reproductive isolating mechanisms 
D)  Allopatric isolating mechanisms 
E)  Preadaptive isolating mechanisms

Question 18

MATCHING
Match the following terms with their description
a.accounts for the abrupt appearance of new species in the fossil record in absence of transitional fosssils
d.contains multiple sets of chromosomes from 2 or more species
b.species with a inheritable unique diagnostic trait
e.the possession of more than 2 genomes
c.speciation results from their divergence in genetic composition
-punctuated equilibrium

Accepted Answer

The answer of MATCHING
Match the following terms with their description
a.accounts...

Question 19

A porpoise and a dolphin, both mammals, mate and produce an embryo, but the embryo fails to complete development.This event describes:

Accepted Answer

A)  gestational abortion. 
B)  hybrid inviability. 
C)  hybrid breakdown. 
D)  temporal isolation. 
E)  hybrid sterility. 
A)  gestational abortion. 
B)  hybrid inviability. 
C)  hybrid breakdown. 
D)  temporal isolation. 
E)  hybrid sterility.

Question 20

Hybrid inviability and hybrid sterility are reproductive isolating mechanisms that are termed:

Accepted Answer

A)  homozygotic barriers. 
B)  prezygotic barriers. 
C)  heterozygotic barriers. 
D)  postzygotic barriers. 
E)  homozygotic barriers 
A)  homozygotic barriers. 
B)  prezygotic barriers. 
C)  heterozygotic barriers. 
D)  postzygotic barriers. 
E)  homozygotic barriers

Exam 20: Speciation and Macroevolution

The two major forces contributing to allopatric speciation are:

The evolutionary species concept states that for a population to be declared a separate species:

Sexual isolation occurs when the egg proteins bind only complementary molecules on species specific sperm. ____________

Based on the data in the figure, a likely reason for speciation between these two sympatric species of frogs is:

Allopolyploidy is a significant factor in the evolution of:

When larval or juvenile characteristics are retained in the adult stage, it is known as:

One group of fruit flies reproduces in August and one group reproduces in September.Which of the following mechanisms is preventing them from cross breeding?

Differentiate between macroevolution, microevolution, and speciation.

Sympatric speciation is the most common method of speciation and accounts for almost all evolution of new animal species.

Humans are an example of __________ species.

The sympatric speciation of Hawthorn and apple maggot flies:

An individual adaptive zone can be occupied by how many different species?

The prevention of genetic exchange between two species because they reproduce at different times of the day or year is called:

If a population of allopolyploids were to evolve in an area, what are possible outcomes for this new species?

Hybrid breakdown is characterized by:

Figure 20-1 Use the figure to answer the corresponding question(s). -Variations in rates of growth for different parts of the body are referred to as:

__________ would prevent interbreeding between two species of fish living in the same habitat.

A porpoise and a dolphin, both mammals, mate and produce an embryo, but the embryo fails to complete development.This event describes:

Hybrid inviability and hybrid sterility are reproductive isolating mechanisms that are termed:

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

Evolutionary Change in Populations

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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