Question 1

__________ species of many plants (and a few animals)originated by chromosome nondisjunction.

Accepted Answer

The answer of __________ species of many plants (and a...

Question 2

Which statement about gene mutations is FALSE?

Accepted Answer

A)  All mutations are transmitted to the next generation. 
B)  Mutations are rare but their rates can be predicted. 
C)  Mutations with beneficial effects will be favored by natural selection. 
D)  Many mutations reduce an individual's chance of surviving and reproducing. 
E)  Mutations with neutral effects neither help nor hurt the individual. 
A)  All mutations are transmitted to the next generation. 
B)  Mutations are rare but their rates can be predicted. 
C)  Mutations with beneficial effects will be favored by natural selection. 
D)  Many mutations reduce an individual's chance of surviving and reproducing. 
E)  Mutations with neutral effects neither help nor hurt the individual.

Question 3

The Hardy-Weinberg law is useful for

Accepted Answer

A)  determining the extent to which a sexually reproducing population is evolving. 
B)  predicting when genetic drift will occur in a sexually reproducing population. 
C)  determining when speciation will occur. 
D)  predicting when specific groups of organisms will become extinct. 
E)  determining if a patient has a genetic disease. 
A)  determining the extent to which a sexually reproducing population is evolving. 
B)  predicting when genetic drift will occur in a sexually reproducing population. 
C)  determining when speciation will occur. 
D)  predicting when specific groups of organisms will become extinct. 
E)  determining if a patient has a genetic disease.

Question 4

Two or more alleles of a gene present at relatively high frequencies in a population's gene pool is known as ____.

Accepted Answer

A)  disruptive selection 
B)  sexual dimorphism 
C)  directional selection 
D)  stabilizing selection 
E)  balanced polymorphism 
A)  disruptive selection 
B)  sexual dimorphism 
C)  directional selection 
D)  stabilizing selection 
E)  balanced polymorphism

Question 5

For the following statements, select the best choice of the four evolutionary processes listed below.
-The occurrence of mimicry is best explained as the ultimate result of this process.

Accepted Answer

A) Mutation 
B) gene flow 
C) genetic drift 
D) natural selection 
A) Mutation 
B) gene flow 
C) genetic drift 
D) natural selection

Question 6

All of the following are reproductive isolating mechanisms except:

Accepted Answer

A)  temporal isolation 
B)  mechanical isolation 
C)  behavioral isolation 
D)  genetic drift 
E)  gamete incompatibility 
A)  temporal isolation 
B)  mechanical isolation 
C)  behavioral isolation 
D)  genetic drift 
E)  gamete incompatibility

Question 7

Microevolution is change in the __________ of a population.

Accepted Answer

The answer of Microevolution is change in the __________ of...

Question 8

Figure 17.9
  
-The graph above shows the survival of sociable weavers as a function of body mass.Sociable weaver body mass seems to be an example of ____.

Accepted Answer

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

Question 9

__________ selection leads to forms of traits that enhance reproductive success and may result in sexual dimorphism.

Accepted Answer

The answer of __________ selection leads to forms of traits...

Question 10

What term best describes a driver of natural selection,such as competition for mates or predation by birds?

Accepted Answer

A)  adaptive radiation 
B)  selection pressure 
C)  mutation 
D)  genetic variation 
E)  gene flow 
A)  adaptive radiation 
B)  selection pressure 
C)  mutation 
D)  genetic variation 
E)  gene flow

Question 11

Choose the most appropriate letter for each.
-p2

Accepted Answer

A) a reference point that implies stability of gene frequencies through generations 
B) a hallmark is reproductive isolation from other groups 
C) the genes of an entire population 
D) the frequency of homozygous dominants in a population 
E) the frequencies of dominant and recessive alleles in a population
F)the frequency of heterozygotes in a population
G)the frequency of homozygous recessives in a population
H)selection that occurs in environments favorable to heterozygotes
I)results in pesticide-resistant pests 
A) a reference point that implies stability of gene frequencies through generations 
B) a hallmark is reproductive isolation from other groups 
C) the genes of an entire population 
D) the frequency of homozygous dominants in a population 
E) the frequencies of dominant and recessive alleles in a population
F)the frequency of heterozygotes in a population
G)the frequency of homozygous recessives in a population
H)selection that occurs in environments favorable to heterozygotes
I)results in pesticide-resistant pests

Question 12

Gene flow counters the effects of mutation,__________________,and genetic drift.

Accepted Answer

The answer of Gene flow counters the effects of mutation,__________________,and...

Question 13

__________________________occurs when a trait has been repurposed during evolution.

Accepted Answer

The answer of __________________________occurs when a trait has been repurposed...

Question 14

Parapatric speciation occurs most often ____.

Accepted Answer

A)  within in the same home range 
B)  populations inhabiting different areas while maintaining contact along a common border 
C)  within a group of interbreeding populations 
D)  on either side of geographic barriers 
E)  by polyploidy 
A)  within in the same home range 
B)  populations inhabiting different areas while maintaining contact along a common border 
C)  within a group of interbreeding populations 
D)  on either side of geographic barriers 
E)  by polyploidy

Exam 17: Processes of Evolution

__________ species of many plants (and a few animals)originated by chromosome nondisjunction.

Which statement about gene mutations is FALSE?

The Hardy-Weinberg law is useful for

Two or more alleles of a gene present at relatively high frequencies in a population's gene pool is known as ____.

For the following statements, select the best choice of the four evolutionary processes listed below. -The occurrence of mimicry is best explained as the ultimate result of this process.

All of the following are reproductive isolating mechanisms except:

Microevolution is change in the __________ of a population.

Figure 17.9 -The graph above shows the survival of sociable weavers as a function of body mass.Sociable weaver body mass seems to be an example of ____.

__________ selection leads to forms of traits that enhance reproductive success and may result in sexual dimorphism.

What term best describes a driver of natural selection,such as competition for mates or predation by birds?

Choose the most appropriate letter for each. -p2

Gene flow counters the effects of mutation,__________________,and genetic drift.

__________________________occurs when a trait has been repurposed during evolution.

Parapatric speciation occurs most often ____.

Invitation to Biology

Life's Chemical Bases

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where it Starts—Photosynthesis

How Cells Release Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Organizing Information about Species

Life's Origin and Early Evolution

Viruses, Bacteria, and Archaea

Protists: The Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution: The Invertebrates

Animal Evolution: The Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive System

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters