Question 1

In __________ speciation, populations in contact along a common border speciate.

Accepted Answer

The answer of In __________ speciation, populations in contact along...

Question 2

Individuals of a __________ share a gene pool.

Accepted Answer

The answer of Individuals of a __________ share a gene...

Question 3

Give an example of exaptation in humans?

Accepted Answer

Our opposable thumbs are an example of e

Question 4

__________ occurs when two species act as agents of selection upon one another.

Accepted Answer

The answer of __________ occurs when two species act as...

Question 5

-If the frequency of a recessive gene in a population under genetic equilibrium is 40 percent, in the next generation the frequency of that gene would be

Accepted Answer

A)  20 percent. 
B)  40 percent. 
C)  80 percent. 
D)  2pq. 
E)  unpredictable. 
A)  20 percent. 
B)  40 percent. 
C)  80 percent. 
D)  2pq. 
E)  unpredictable.

Question 6

Which of the following is the best definition of sympatric speciation?

Accepted Answer

A)  species that evolve due to geographical distance 
B)  mechanical isolation acts to prevent speciation 
C)  breeding behavior that prevents the organisms from breeding due to differences in their breeding time 
D)  ecological isolation 
E)  evolutionary change that creates two species occupying the same space 
A)  species that evolve due to geographical distance 
B)  mechanical isolation acts to prevent speciation 
C)  breeding behavior that prevents the organisms from breeding due to differences in their breeding time 
D)  ecological isolation 
E)  evolutionary change that creates two species occupying the same space

Question 7

Which of these statements is true?

Accepted Answer

A)  Environment can readily alter some genotypes. 
B)  Genotype is manifested in phenotype. 
C)  Genetic variation is easier seen than phenotypic variation. 
D)  Variation dies with individuals. 
E)  Phenotype is seen physically in the genotype. 
A)  Environment can readily alter some genotypes. 
B)  Genotype is manifested in phenotype. 
C)  Genetic variation is easier seen than phenotypic variation. 
D)  Variation dies with individuals. 
E)  Phenotype is seen physically in the genotype.

Question 8

MATCHING
Matching.Choose the most appropriate letter for each.
a.a reference point that implies stability of gene frequencies through generations
b.encompasses all of those actually or potentially interbreeding populations that are reproductively isolated from other such 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.heterozygote advantage in regions where malaria is found
i.pesticide-resistant pests
-directional selection

Accepted Answer

The answer of MATCHING
Matching.Choose the most appropriate letter for each.
a.a...

Question 9

Stabilizing selection occurs when

Accepted Answer

A)  the environment controls which organisms will survive. 
B)  humans determine which organisms will survive. 
C)  the extremes of the population have a lesser chance to survive. 
D)  the extremes of the population have a better chance to survive. 
E)  the organisms on one extreme of the population have a better chance to survive than those on the other extreme. 
A)  the environment controls which organisms will survive. 
B)  humans determine which organisms will survive. 
C)  the extremes of the population have a lesser chance to survive. 
D)  the extremes of the population have a better chance to survive. 
E)  the organisms on one extreme of the population have a better chance to survive than those on the other extreme.

Question 10

MATCHING
Matching.Choose the most appropriate letter for each.
a.a reference point that implies stability of gene frequencies through generations
b.encompasses all of those actually or potentially interbreeding populations that are reproductively isolated from other such 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.heterozygote advantage in regions where malaria is found
i.pesticide-resistant pests
-genetic equilibrium

Accepted Answer

The answer of MATCHING
Matching.Choose the most appropriate letter for each.
a.a...

Question 11

__________ shifts the range of variation in traits in one direction.

Accepted Answer

Directiona

Question 12

MATCHING
Matching.Choose the most appropriate letter for each.
a.a reference point that implies stability of gene frequencies through generations
b.encompasses all of those actually or potentially interbreeding populations that are reproductively isolated from other such 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.heterozygote advantage in regions where malaria is found
i.pesticide-resistant pests
-balanced polymorphism

Accepted Answer

The answer of MATCHING
Matching.Choose the most appropriate letter for each.
a.a...

Question 13

When DDT was first introduced, insects were very susceptible to it.The development of resistance to DDT by insects was the result of

Accepted Answer

A)  special creation. 
B)  natural selection of forms that expressed genes for resistance. 
C)  the high biotic potential of insects. 
D)  a naturally occurring example of inheritance of acquired characteristics. 
E)  mutation induced by DDT. 
A)  special creation. 
B)  natural selection of forms that expressed genes for resistance. 
C)  the high biotic potential of insects. 
D)  a naturally occurring example of inheritance of acquired characteristics. 
E)  mutation induced by DDT.

Question 14

The Hardy-Weinberg rule is

Accepted Answer

A)  useful in determining the extent to which a sexually reproducing population is evolving. 
B)  used to predict when genetic drift will occur in a sexually reproducing population. 
C)  useful in determining the extent to which polyploidy is occurring in specific plant populations. 
D)  used to predict when specific groups of organisms will become extinct. 
E)  all of these. 
A)  useful in determining the extent to which a sexually reproducing population is evolving. 
B)  used to predict when genetic drift will occur in a sexually reproducing population. 
C)  useful in determining the extent to which polyploidy is occurring in specific plant populations. 
D)  used to predict when specific groups of organisms will become extinct. 
E)  all of these.

Question 15

Sexual dimorphism has arisen as a result of

Accepted Answer

A)  stabilizing selection. 
B)  heterozygote superiority. 
C)  kin selection. 
D)  sexual selection. 
E)  directional selection. 
A)  stabilizing selection. 
B)  heterozygote superiority. 
C)  kin selection. 
D)  sexual selection. 
E)  directional selection.

Question 16

Consider the sources of variation in traits among individuals of a species.Which of those can the member of the species control and which can they not control?

Accepted Answer

Mutation is a chance event that cannot b

Question 17

-This graph shows both human birth weight and newborn infant mortality.The most common birth weight is between seven and eight pounds.Human birth weight 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 18

Gene flow

Accepted Answer

A)  has a homogenizing influence on a population. 
B)  speeds up the divergence of two populations. 
C)  increases the genetic variation between populations. 
D)  is promoted by isolating mechanisms. 
E)  promotes inbreeding. 
A)  has a homogenizing influence on a population. 
B)  speeds up the divergence of two populations. 
C)  increases the genetic variation between populations. 
D)  is promoted by isolating mechanisms. 
E)  promotes inbreeding.

Question 19

Classification.For the following statements select the best choice of the four evolutionary processes listed below.
a.mutation
b.gene flow
c.genetic drift
d.natural selection
-The occurrence of mimicry is best explained as the ultimate result of this process.

Accepted Answer

The answer of Classification.For the following statements select the best...

Question 20

Which of the following can result in speciation within a few generations?

Accepted Answer

A)  development of a physical barrier 
B)  polyploidy arising in a plant species 
C)  postzygotic isolating mechanisms 
D)  change in environmental conditions 
E)  the introduction of a new predator into an area 
A)  development of a physical barrier 
B)  polyploidy arising in a plant species 
C)  postzygotic isolating mechanisms 
D)  change in environmental conditions 
E)  the introduction of a new predator into an area

Exam 17: Processes of Evolution

In __________ speciation, populations in contact along a common border speciate.

Individuals of a __________ share a gene pool.

Give an example of exaptation in humans?

__________ occurs when two species act as agents of selection upon one another.

-If the frequency of a recessive gene in a population under genetic equilibrium is 40 percent, in the next generation the frequency of that gene would be

Which of the following is the best definition of sympatric speciation?

Which of these statements is true?

Stabilizing selection occurs when

__________ shifts the range of variation in traits in one direction.

When DDT was first introduced, insects were very susceptible to it.The development of resistance to DDT by insects was the result of

The Hardy-Weinberg rule is

Sexual dimorphism has arisen as a result of

Consider the sources of variation in traits among individuals of a species.Which of those can the member of the species control and which can they not control?

-This graph shows both human birth weight and newborn infant mortality.The most common birth weight is between seven and eight pounds.Human birth weight seems to be an example of

Gene flow

Classification.For the following statements select the best choice of the four evolutionary processes listed below. a.mutation b.gene flow c.genetic drift d.natural selection -The occurrence of mimicry is best explained as the ultimate result of this process.

Which of the following can result in speciation within a few generations?

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

Ground Rules of Metabolism

Where It Startsphotosynthesis

How Cells Release Chemical Energy

Dna Structure and Function

From Dna to Protein

Gene Control

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

Lifes Origin and Early Evolution

Viruses and Prokaryotes

Protiststhe Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolutionthe Invertebrates

Animal Evolutionthe Chordates

Animal Evolutionhuman 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 Systems

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters