Question 1

The border across which genes can flow between two populations is called the ____.

Accepted Answer

A) contact zone 
B) parapatric zone 
C) zone of speciation 
D) demilitarized zone 
E) zone of polyploidy 
A) contact zone 
B) parapatric zone 
C) zone of speciation 
D) demilitarized zone 
E) zone of polyploidy

Question 2

Match the event with the most appropriate term.
-Which is most likely to lead to the loss of genetic variation in a small population?

Accepted Answer

A) directional selection 
B) sexual dimorphism 
C) sympatric speciation 
D) balanced polymorphism 
E) coevolution
F)allopatric speciation
G)key innovation
H)adaptive radiation 
A) directional selection 
B) sexual dimorphism 
C) sympatric speciation 
D) balanced polymorphism 
E) coevolution
F)allopatric speciation
G)key innovation
H)adaptive radiation

Question 3

A female from one species does not recognize the mating patterns of a male from another species. What type of reproductive isolation is occurring?

Accepted Answer

A) mechanical 
B) ecological 
C) gamete incompatibility 
D) temporal 
E) behavioral 
A) mechanical 
B) ecological 
C) gamete incompatibility 
D) temporal 
E) behavioral

Question 4

The acquisition of a key evolutionary innovation by a species gives evidence for the concept of ____.

Accepted Answer

A) uniformitarianism 
B) gradualism 
C) convergence 
D) adaptive radiation 
E) special creation 
A) uniformitarianism 
B) gradualism 
C) convergence 
D) adaptive radiation 
E) special creation

Question 5

It is now easier than ever for humans to travel to and live in other parts of the world. Because of this, populations from different parts of the world that were once isolated from each other are now much more likely to interact and breed. This leads to increased ____.

Accepted Answer

A) frequency-dependent selection 
B) stabilizing selection 
C) genetic drift 
D) gene flow 
E) founder effects 
A) frequency-dependent selection 
B) stabilizing selection 
C) genetic drift 
D) gene flow 
E) founder effects

Question 6

What term describes all alleles of all the genes in a population?

Accepted Answer

A) genome tree 
B) genetic family 
C) gene reservoir 
D) gene pool 
E) allele collection 
A) genome tree 
B) genetic family 
C) gene reservoir 
D) gene pool 
E) allele collection

Question 7

-Balanced dimorphisms will be seen in population illustrated in ____.

Accepted Answer

A) A 
B) B 
C) C 
D) A and B 
E) B and C 
A) A 
B) B 
C) C 
D) A and B 
E) B and C

Question 8

Describe the difference between microevolution and macroevolution.

Accepted Answer

Microevolution refers to allele frequenc

Question 9

Match the event with the most appropriate term.
-two beta globin chain alleles (the Hb A normal allele and the HB S sickle cell anemia allele) that both circulate at high frequencies in subtropical regions where malaria is a threat

Accepted Answer

A) directional selection 
B) sexual dimorphism 
C) sympatric speciation 
D) balanced polymorphism 
E) coevolution
F)allopatric speciation
G)key innovation
H)adaptive radiation 
A) directional selection 
B) sexual dimorphism 
C) sympatric speciation 
D) balanced polymorphism 
E) coevolution
F)allopatric speciation
G)key innovation
H)adaptive radiation

Question 10

New alleles arise by ____.

Accepted Answer

A) mutation 
B) migration 
C) genetic drift 
D) random mating 
E) independent assortment 
A) mutation 
B) migration 
C) genetic drift 
D) random mating 
E) independent assortment

Question 11

The sharp reduction of the gene pool and the numbers of a population through a severe epidemic is an example of ____.

Accepted Answer

A) artificial selection 
B) genetic isolation 
C) the bottleneck effect 
D) the founder effect 
E) natural selection 
A) artificial selection 
B) genetic isolation 
C) the bottleneck effect 
D) the founder effect 
E) natural selection

Question 12

Allopatric speciation requires ____.

Accepted Answer

A) gradual evolutionary changes 
B) geographic isolation 
C) polyploidy 
D) adaptive radiation 
E) rapid evolutionary change 
A) gradual evolutionary changes 
B) geographic isolation 
C) polyploidy 
D) adaptive radiation 
E) rapid evolutionary change

Question 13

Allopatric and sympatric speciation both occur in the absence of ____.

Accepted Answer

A) development of a physical barrier 
B) polyploidy 
C) increase in physical size 
D) change in environmental conditions 
E) the introduction of a new predator into an area 
A) development of a physical barrier 
B) polyploidy 
C) increase in physical size 
D) change in environmental conditions 
E) the introduction of a new predator into an area

Question 14

In a population that is in Hardy-Weinberg equilibrium, the frequency of the homozygous dominant genotype is 0.49. The percentage of the population that is heterozygous is ____.

Accepted Answer

A) 51 
B) 49 
C) 42 
D) 7 
E) 3 
A) 51 
B) 49 
C) 42 
D) 7 
E) 3

Question 15

The introduction of a small population onto an island that results in a limited gene pool for a population best describes ____.

Accepted Answer

A) the Hardy-Weinberg law 
B) genetic drift 
C) the bottleneck effect 
D) the founder effect 
E) the effect of genetic isolation 
A) the Hardy-Weinberg law 
B) genetic drift 
C) the bottleneck effect 
D) the founder effect 
E) the effect of genetic isolation

Question 16

Most changes in DNA sequence are ____.

Accepted Answer

A) neutral 
B) lethal 
C) beneficial 
D) functional 
E) structural 
A) neutral 
B) lethal 
C) beneficial 
D) functional 
E) structural

Question 17

Match the event with the most appropriate term.
-Which process produces new genetic variation within a species?

Accepted Answer

A) directional selection 
B) sexual dimorphism 
C) sympatric speciation 
D) balanced polymorphism 
E) coevolution
F)allopatric speciation
G)key innovation
H)adaptive radiation 
A) directional selection 
B) sexual dimorphism 
C) sympatric speciation 
D) balanced polymorphism 
E) coevolution
F)allopatric speciation
G)key innovation
H)adaptive radiation

Question 18

Mutations that neither harm nor help an organism are called ____.

Accepted Answer

A) dominant 
B) null 
C) standard 
D) neutral 
E) recessive 
A) dominant 
B) null 
C) standard 
D) neutral 
E) recessive

Question 19

The influence of genetic drift on allele frequencies increases as ____.

Accepted Answer

A) gene flow increases 
B) population size decreases 
C) mutation rate decreases 
D) the number of heterozygous loci increases 
E) population size increases 
A) gene flow increases 
B) population size decreases 
C) mutation rate decreases 
D) the number of heterozygous loci increases 
E) population size increases

Question 20

Complete reproductive isolation is evidence that what has occurred?

Accepted Answer

A) extinction 
B) speciation 
C) polyploidy 
D) hybridization 
E) gene flow 
A) extinction 
B) speciation 
C) polyploidy 
D) hybridization 
E) gene flow

Exam 17: Processes of Evolution

The border across which genes can flow between two populations is called the ____.

Match the event with the most appropriate term. -Which is most likely to lead to the loss of genetic variation in a small population?

A female from one species does not recognize the mating patterns of a male from another species. What type of reproductive isolation is occurring?

The acquisition of a key evolutionary innovation by a species gives evidence for the concept of ____.

It is now easier than ever for humans to travel to and live in other parts of the world. Because of this, populations from different parts of the world that were once isolated from each other are now much more likely to interact and breed. This leads to increased ____.

What term describes all alleles of all the genes in a population?

-Balanced dimorphisms will be seen in population illustrated in ____.

Describe the difference between microevolution and macroevolution.

Match the event with the most appropriate term. -two beta globin chain alleles (the Hb A normal allele and the HB S sickle cell anemia allele) that both circulate at high frequencies in subtropical regions where malaria is a threat

New alleles arise by ____.

The sharp reduction of the gene pool and the numbers of a population through a severe epidemic is an example of ____.

Allopatric speciation requires ____.

Allopatric and sympatric speciation both occur in the absence of ____.

In a population that is in Hardy-Weinberg equilibrium, the frequency of the homozygous dominant genotype is 0.49. The percentage of the population that is heterozygous is ____.

The introduction of a small population onto an island that results in a limited gene pool for a population best describes ____.

Most changes in DNA sequence are ____.

Match the event with the most appropriate term. -Which process produces new genetic variation within a species?

Mutations that neither harm nor help an organism are called ____.

The influence of genetic drift on allele frequencies increases as ____.

Complete reproductive isolation is evidence that what has occurred?

The Science of Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where It Starts-Photosynthesis

Releasing Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Patterns in Inherited Traits

Human Inheritance

Biotechnology

Evidence of Evolution

Lifes Origin and Early Evolution

Viruses, Bacteria, and Archaea

The Protists

Plant Evolution

Fungi

Animals I: Major Invertebrate Groups

Animals Ii: the Chordates

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

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Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Reproduction and Development

Animal Behavior

Population Ecology

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Ecosystems

The Biosphere

Human Effects on the Biosphere

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