Question 1

If there are just two alleles at a locus, p + q must equal __________.

Accepted Answer

1.0

Question 2

In a population in H-W equilibrium in which p = 0.4 and q = 0.6, the frequency of the heterozygotes is __________.

Accepted Answer

0.48

Question 3

Phenotypic plasticity

Accepted Answer

A)  is unimportant to evolution. 
B)  is the direct result of the environment on the phenotype. 
C)  is the direct result of the genotype on the phenotype. 
D)  occurs in traits with high heritability. 
E)  none of the above 
A)  is unimportant to evolution. 
B)  is the direct result of the environment on the phenotype. 
C)  is the direct result of the genotype on the phenotype. 
D)  occurs in traits with high heritability. 
E)  none of the above B

Question 4

Darwin's theory

Accepted Answer

A)  resulted from his understanding of genetics. 
B)  states that all features of organisms are adaptive. 
C)  did not include genetic drift as a mechanism. 
D)  was immediately accepted. 
E)  none of the above 
A)  resulted from his understanding of genetics. 
B)  states that all features of organisms are adaptive. 
C)  did not include genetic drift as a mechanism. 
D)  was immediately accepted. 
E)  none of the above

Question 5

The significance of the Hardy-Weinberg equilibrium is that

Accepted Answer

A)  it demonstrates that evolution eventually stops. 
B)  it demonstrates that natural selection is the only mechanism of evolution. 
C)  it demonstrates that evolution only happens in large populations. 
D)  its assumptions lead to mechanisms of evolution. 
E)  none of the above 
A)  it demonstrates that evolution eventually stops. 
B)  it demonstrates that natural selection is the only mechanism of evolution. 
C)  it demonstrates that evolution only happens in large populations. 
D)  its assumptions lead to mechanisms of evolution. 
E)  none of the above

Question 6

The __________ states that for some species the environment changes faster than adaptations can arise.

Accepted Answer

Red Queen

Question 7

The panda's "thumb" is an example of __________.

Accepted Answer

An imperfe

Question 8

What is the significance of a population that is in Hardy-Weinberg equilibrium?

Accepted Answer

A)  It is not evolving. 
B)  Selection and gene flow are in equilibrium. 
C)  Each genotype occurs in equal frequency. 
D)  The values of p and q are equal. 
E)  none of the above 
A)  It is not evolving. 
B)  Selection and gene flow are in equilibrium. 
C)  Each genotype occurs in equal frequency. 
D)  The values of p and q are equal. 
E)  none of the above

Question 9

Which of the following is not an assumption of the Hardy-Weinberg model?

Accepted Answer

A)  Mating is random. 
B)  no differential success of genotypes 
C)  no competition among individuals 
D)  no net movement of alleles 
E)  no new mutations 
A)  Mating is random. 
B)  no differential success of genotypes 
C)  no competition among individuals 
D)  no net movement of alleles 
E)  no new mutations

Question 10

Darwin's theory of evolution was correct but incomplete.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following was not a component of Darwin's logical argument about natural selection?

Accepted Answer

A)  There is variation among individuals in a population. 
B)  Few organisms achieve their reproductive potential. 
C)  There is competition among individuals. 
D)  New species arise primarily on islands. 
E)  none of the above 
A)  There is variation among individuals in a population. 
B)  Few organisms achieve their reproductive potential. 
C)  There is competition among individuals. 
D)  New species arise primarily on islands. 
E)  none of the above

Question 12

Ecotypes are most likely to arise if __________ and __________.

Accepted Answer

natural selection is

Question 13

The sum of all alleles in a population constitutes the __________.

Accepted Answer

The answer of The sum of all alleles in a...

Question 14

In Wright's adaptive landscape, the vertical (y) axis depicts the __________ of the genotype.

Accepted Answer

The answer of In Wright's adaptive landscape, the vertical (y)...

Question 15

The gene pool is characterized by

Accepted Answer

A)  allele frequencies. 
B)  mutations. 
C)  its DNA sequences. 
D)  Mendel's laws. 
E)  none of the above 
A)  allele frequencies. 
B)  mutations. 
C)  its DNA sequences. 
D)  Mendel's laws. 
E)  none of the above

Question 16

Fitness is

Accepted Answer

A)  a property of the population. 
B)  a property of the species. 
C)  a property of the individual. 
D)  independent of the environment. 
E)  none of the above 
A)  a property of the population. 
B)  a property of the species. 
C)  a property of the individual. 
D)  independent of the environment. 
E)  none of the above

Question 17

Which of the following influenced Darwin's thinking about evolution?

Accepted Answer

A)  the theory of uniformitarianism 
B)  the geology of volcanoes 
C)  geographic variation in species 
D)  all of the above 
E)  none of the above 
A)  the theory of uniformitarianism 
B)  the geology of volcanoes 
C)  geographic variation in species 
D)  all of the above 
E)  none of the above

Question 18

Genetic drift is more pronounces when __________ is small; natural selection is more pronounced when __________ is large.

Accepted Answer

N_e; selecti

Question 19

In disruptive selection,

Accepted Answer

A)  one tail of the distribution is favored. 
B)  both tails of the distribution are favored. 
C)  the center of the distribution is favored. 
D)  the tails and center of the distribution are favored. 
E)  none of the above 
A)  one tail of the distribution is favored. 
B)  both tails of the distribution are favored. 
C)  the center of the distribution is favored. 
D)  the tails and center of the distribution are favored. 
E)  none of the above

Question 20

An adaptation is a feature of the organism that

Accepted Answer

A)  increases its population size. 
B)  increases its fitness. 
C)  affects other organisms. 
D)  does not include behavior. 
E)  does not include morphology. 
A)  increases its population size. 
B)  increases its fitness. 
C)  affects other organisms. 
D)  does not include behavior. 
E)  does not include morphology.

Exam 2: Adaptation and Evolution

If there are just two alleles at a locus, p + q must equal __________.

In a population in H-W equilibrium in which p = 0.4 and q = 0.6, the frequency of the heterozygotes is __________.

Phenotypic plasticity

Darwin's theory

The significance of the Hardy-Weinberg equilibrium is that

The __________ states that for some species the environment changes faster than adaptations can arise.

The panda's "thumb" is an example of __________.

What is the significance of a population that is in Hardy-Weinberg equilibrium?

Which of the following is not an assumption of the Hardy-Weinberg model?

Darwin's theory of evolution was correct but incomplete.

Which of the following was not a component of Darwin's logical argument about natural selection?

Ecotypes are most likely to arise if __________ and __________.

The sum of all alleles in a population constitutes the __________.

In Wright's adaptive landscape, the vertical (y) axis depicts the __________ of the genotype.

The gene pool is characterized by

Fitness is

Which of the following influenced Darwin's thinking about evolution?

Genetic drift is more pronounces when __________ is small; natural selection is more pronounced when __________ is large.

In disruptive selection,

An adaptation is a feature of the organism that

Introduction to Ecology

Adaptations to the Physical Environment

Terrestrial Communities

Fresh-water and Marine Communities

Behavioral Ecology

The Ecology of Intraspecific Variation

Demography

Population Regulation

Life History Strategies

Competition

Coevolution I Exploitative Interactions

Mutualism

The Structure of Communities

Ecological Succession

Species Diversity

Energy Flow and Trophic Structure

Biogeochemical Cycles

Conservation Biology

Landscape Ecology

Human Global Ecology

Filters

Ecotypes are most likely to arise if and .

Genetic drift is more pronounces when is small; natural selection is more pronounced when is large.