Question 1

Compare and contrast natural selection with genetic drift as mechanisms of evolution.

Accepted Answer

Natural selection and genetic drift are

Question 2

Suppose a large population exists on a continent,and a new population is formed by the migration of a few individuals to an island some distance away.The fact that the alleles being carried to this island are not going to be a complete and representative set,as compared to the continental population,is a case of genetic drift known as the ________.[two words]

Accepted Answer

The answer of Suppose a large population exists on a...

Question 3

In terms of the Hardy-Weinberg equilibrium,genetic drift results from a violation of ________.

Accepted Answer

A)  the random mating assumption 
B)  the lack of natural selection assumption 
C)  the infinite population size assumption 
D)  the lack of mutation assumption 
E)  the lack of migration assumption 
A)  the random mating assumption 
B)  the lack of natural selection assumption 
C)  the infinite population size assumption 
D)  the lack of mutation assumption 
E)  the lack of migration assumption

Question 4

There are occasions when theoretical expectations do not match with actual outcomes,as you see in the case of zygote formation leading to genetic drift.This discrepancy is known as ________.

Accepted Answer

A)  sampling bias 
B)  sampling error 
C)  nonrandom mating 
D)  random mutations 
A)  sampling bias 
B)  sampling error 
C)  nonrandom mating 
D)  random mutations

Question 5

Although most of the mechanisms of evolution are nonrandom,the one that is absolutely random is ________.

Accepted Answer

A)  sexual selection 
B)  natural selection 
C)  artificial selection 
D)  genetic drift 
A)  sexual selection 
B)  natural selection 
C)  artificial selection 
D)  genetic drift

Question 6

The accompanying figure details the possible outcomes in a scenario in which 10 zygotes are formed from a gene pool where frequency of the allele A1 is 0.6,and A2 is 0.4.This graph is shown here.According to this graph,the probability that the frequency of A1 will remain the same in the next generation is about ________.

Accepted Answer

A)  8% 
B)  12% 
C)  16% 
D)  18% 
E)  none of the above 
A)  8% 
B)  12% 
C)  16% 
D)  18% 
E)  none of the above

Question 7

A phenomenon known as ________ [two words] occurs under conditions where a selection pressure works against deleterious mutations,resulting in the corresponding decrease in the frequency of a closely linked neutral mutation.

Accepted Answer

background

Question 8

Figure 7.6 from your text,shown below,is a set of histograms showing the frequency of different color patterns of water snakes of Lake Erie (Nerodia sipedon).Type A snakes are unbanded,Type B are strongly banded,and Types C and D are intermediates.Given that natural selection favors unbanded snakes on the islands,how can you account for the presence/perpetuation of banded snakes on the islands?

Accepted Answer

A)  Mutation rates converting unbanded alleles to a banded form operate at high frequencies on islands. 
B)  Natural selection favors unbanded snakes on the mainland. 
C)  Snakes on the islands represent a case of the so-called founder effect. 
D)  Natural selection favors banded snakes on the mainland, which occasionally migrate to the islands. 
A)  Mutation rates converting unbanded alleles to a banded form operate at high frequencies on islands. 
B)  Natural selection favors unbanded snakes on the mainland. 
C)  Snakes on the islands represent a case of the so-called founder effect. 
D)  Natural selection favors banded snakes on the mainland, which occasionally migrate to the islands.

Question 9

The most common form of nonrandom mating is inbreeding.Despite the fact that inbreeding will not change allelic frequencies,it can still have a significant impact on the evolution of a lineage.Explain,using examples,why this is so.

Accepted Answer

Inbreeding, the most common form of nonr

Question 10

________,the most common type of nonrandom mating,will not change allelic frequencies,but it will change genotypic frequencies toward homozygosity.

Accepted Answer

The answer of ________,the most common type of nonrandom mating,will...

Compare and contrast natural selection with genetic drift as mechanisms of evolution.

In terms of the Hardy-Weinberg equilibrium,genetic drift results from a violation of ________.

There are occasions when theoretical expectations do not match with actual outcomes,as you see in the case of zygote formation leading to genetic drift.This discrepancy is known as ________.

Although most of the mechanisms of evolution are nonrandom,the one that is absolutely random is ________.

A phenomenon known as ________ [two words] occurs under conditions where a selection pressure works against deleterious mutations,resulting in the corresponding decrease in the frequency of a closely linked neutral mutation.

The most common form of nonrandom mating is inbreeding.Despite the fact that inbreeding will not change allelic frequencies,it can still have a significant impact on the evolution of a lineage.Explain,using examples,why this is so.

________,the most common type of nonrandom mating,will not change allelic frequencies,but it will change genotypic frequencies toward homozygosity.

A Case for Evolutionary Thinking: Understanding HIV

The Pattern of Evolution

Evolution by Natural Selection

Estimating Evolutionary Trees

Variation Among Individuals

Mendelian Genetics in Populations I: Selection and Mutation

Evolution at Multiple Loci: Linkage and Sex

Evolution at Multiple Loci: Quantitative Genetics

Studying Adaptation: Evolutionary Analysis of Form and Function

Sexual Selection

The Evolution of Social Behavior

Aging and Other Life-History Characters

Evolution and Human Health

Phylogenomics and the Molecular Basis of Adaptation

Mechanisms of Speciation

The Origins of Life and Precambrian Evolution

Evolution and the Fossil Record

Development and Evolution

Human Evolution

Filters

Exam 7: Mendelian Genetics in Populations II: Migration, Drift, & Nonrandom Mating

Compare and contrast natural selection with genetic drift as mechanisms of evolution.

In terms of the Hardy-Weinberg equilibrium,genetic drift results from a violation of ________.

There are occasions when theoretical expectations do not match with actual outcomes,as you see in the case of zygote formation leading to genetic drift.This discrepancy is known as ________.

Although most of the mechanisms of evolution are nonrandom,the one that is absolutely random is ________.

A phenomenon known as ________ [two words] occurs under conditions where a selection pressure works against deleterious mutations,resulting in the corresponding decrease in the frequency of a closely linked neutral mutation.

The most common form of nonrandom mating is inbreeding.Despite the fact that inbreeding will not change allelic frequencies,it can still have a significant impact on the evolution of a lineage.Explain,using examples,why this is so.

________,the most common type of nonrandom mating,will not change allelic frequencies,but it will change genotypic frequencies toward homozygosity.

A Case for Evolutionary Thinking: Understanding HIV

The Pattern of Evolution

Evolution by Natural Selection

Estimating Evolutionary Trees

Variation Among Individuals

Mendelian Genetics in Populations I: Selection and Mutation

Evolution at Multiple Loci: Linkage and Sex

Evolution at Multiple Loci: Quantitative Genetics

Studying Adaptation: Evolutionary Analysis of Form and Function

Sexual Selection

The Evolution of Social Behavior

Aging and Other Life-History Characters

Evolution and Human Health

Phylogenomics and the Molecular Basis of Adaptation

Mechanisms of Speciation

The Origins of Life and Precambrian Evolution

Evolution and the Fossil Record

Development and Evolution

Human Evolution

Filters