Question 1

Why is the peppered moth an excellent example of directional selection?

Accepted Answer

The peppered moth exists in two forms, o

Question 2

Familial hypercholesterolemia, an autosomal dominant disease, is five times more frequent in the Afrikaner population of South Africa than in the original population of Europe from which the ancestors to the Afrikaners immigrated.This represents an example of:

Accepted Answer

A) natural selection. 
B) bottleneck. 
C) the founder effect. 
D) kin selection. 
A) natural selection. 
B) bottleneck. 
C) the founder effect. 
D) kin selection.

Question 3

Why is a frameshift mutation far more likely to lead to a defective protein than a point mutation?

Accepted Answer

The potential effects of a point mutatio

Question 4

A genetic study conducted over multiple generations found that the frequency of genotypes in the first generation were AA: 0.36, Aa: 0.48, aa: 0.16.In the second generation, genotype frequencies shifted to AA: 0.16, Aa: 0.48, aa: 0.36.According to the Hardy-Weinberg equilibrium, we can assume:

Accepted Answer

A) random mating has altered gene frequencies. 
B) gene flow has possibly shifted the gene frequencies. 
C) mating in this population must be nonrandom mating. 
D) both b.and c. 
A) random mating has altered gene frequencies. 
B) gene flow has possibly shifted the gene frequencies. 
C) mating in this population must be nonrandom mating. 
D) both b.and c.

Question 5

Evolution can best be defined as:

Accepted Answer

A) the appearance of a new species. 
B) a change in allele frequencies in a breeding population over time. 
C) changes in the DNA of an individual over his or her lifetime. 
D) a process that occurs only over extremely long periods of time. 
A) the appearance of a new species. 
B) a change in allele frequencies in a breeding population over time. 
C) changes in the DNA of an individual over his or her lifetime. 
D) a process that occurs only over extremely long periods of time.

Question 6

In certain species of nonhuman primates there are groups where only one dominant female has access to mates.The other females must wait until the opportunity to mate presents itself.This will have direct impacts on "fitness," influencing which of the following?

Accepted Answer

A) reproductive success 
B) aggressiveness 
C) strength 
D) age at death 
A) reproductive success 
B) aggressiveness 
C) strength 
D) age at death

Question 7

The best-documented case of industrial melanism involves:

Accepted Answer

A) Galápagos finches. 
B) dung beetles. 
C) monarch butterflies. 
D) peppered moths. 
A) Galápagos finches. 
B) dung beetles. 
C) monarch butterflies. 
D) peppered moths.

Question 8

The absence of the A and B alleles in Native American populations is a result of:

Accepted Answer

A) natural selection. 
B) gene flow. 
C) the founder effect. 
D) mutation. 
A) natural selection. 
B) gene flow. 
C) the founder effect. 
D) mutation.

Question 9

Why is the incidence of sickle-cell anemia an excellent example of a "balanced polymorphism," in which two or more alleles are maintained by natural selection in a population?

Accepted Answer

Homozygous normal individuals have healt

Question 10

The evolution of the modern horse with a single hoof on each limb from a dog-sized ancestral species with multiple digits is an example of:

Accepted Answer

A) macroevolution. 
B) stabilizing selection. 
C) disruptive selection. 
D) microevolution. 
A) macroevolution. 
B) stabilizing selection. 
C) disruptive selection. 
D) microevolution.

Question 11

What is a polymorphic trait? Provide two examples of polymorphic traits in modern humans, and give one example of a monomorphic trait.

Accepted Answer

A polymorphic trait is one in which at l

Question 12

The southern migration of which African people may have led to a significant increase in the incidence of malaria?

Accepted Answer

A) Masai 
B) Turkana 
C) Efe 
D) Bantu 
A) Masai 
B) Turkana 
C) Efe 
D) Bantu

Question 13

Which of the evolutionary forces is most likely to decrease variation between populations?

Accepted Answer

A) gene flow 
B) the founder effect 
C) mutation 
D) natural selection 
A) gene flow 
B) the founder effect 
C) mutation 
D) natural selection

Question 14

A random change in allele frequencies over time is known as:

Accepted Answer

A) genetic drift. 
B) gene flow. 
C) admixture. 
D) gene migration. 
A) genetic drift. 
B) gene flow. 
C) admixture. 
D) gene migration.

Question 15

In a classroom taste test for PTC the genotype frequency was determined to be P = 0.35 and Q = 0.65.After applying the Hardy-Weinberg equation, the percentage of genotypes was found to be as follows:

Accepted Answer

A) p2 = 0.12; 2pq = 0.46; q2 = 0.42. 
B) p2 = 0.35; 2pq = 0.00; q2 = 0.65. 
C) p2 = 0.12; 2pq = 0.65; q2 = 0.23. 
D) p2 = 0.20; 2pq = 0.20; q2 = 0.60. 
A) p2 = 0.12; 2pq = 0.46; q2 = 0.42. 
B) p2 = 0.35; 2pq = 0.00; q2 = 0.65. 
C) p2 = 0.12; 2pq = 0.65; q2 = 0.23. 
D) p2 = 0.20; 2pq = 0.20; q2 = 0.60.

Question 16

A genetic study conducted over two generations found that the frequencies of genotypes in the first generation were AA: 0.36, Aa: 0.48, aa: 0.16.In the second generation, genotype frequencies remained the same.According to the Hardy-Weinberg equilibrium, we can assume:

Accepted Answer

A) negative assortative mating has maintained gene frequencies. 
B) mutations have likely occurred, resulting in the same frequency. 
C) mating in this population is random. 
D) the population is small and we cannot detect change. 
A) negative assortative mating has maintained gene frequencies. 
B) mutations have likely occurred, resulting in the same frequency. 
C) mating in this population is random. 
D) the population is small and we cannot detect change.

Question 17

Studies of Galapagos finches have found that at certain points in time all finches on the island have either wide beaks or sharp narrow beaks.The type of evolution that leads to this phenotype distribution is _______ selection.

Accepted Answer

A) directional 
B) natural 
C) disruptive 
D) stabilizing 
A) directional 
B) natural 
C) disruptive 
D) stabilizing

Question 18

Explain how the founder effect can lead to a descendent population that differs greatly from its parent population over a relatively short period of time.

Accepted Answer

The founder effect is a special kind of

Question 19

Patrilocal societies are expected to display:

Accepted Answer

A) greater mtDNA diversity than Y chromosome diversity. 
B) roughly equivalent mtDNA and Y chromosome diversity. 
C) greater Y chromosome diversity than mtDNA diversity. 
D) no strong correlation between societal structure and genetic diversity. 
A) greater mtDNA diversity than Y chromosome diversity. 
B) roughly equivalent mtDNA and Y chromosome diversity. 
C) greater Y chromosome diversity than mtDNA diversity. 
D) no strong correlation between societal structure and genetic diversity.

Question 20

An individual who displays the disease sickle-cell anemia must have inherited the deleterious allele from both phenotypically normal parents.This individual is therefore:

Accepted Answer

A) homozygous, with two dominant alleles. 
B) homozygous, with two recessive alleles. 
C) heterozygous, with one dominant and one recessive allele. 
D) haplozygous. 
A) homozygous, with two dominant alleles. 
B) homozygous, with two recessive alleles. 
C) heterozygous, with one dominant and one recessive allele. 
D) haplozygous.

Why is the peppered moth an excellent example of directional selection?

Familial hypercholesterolemia, an autosomal dominant disease, is five times more frequent in the Afrikaner population of South Africa than in the original population of Europe from which the ancestors to the Afrikaners immigrated.This represents an example of:

Why is a frameshift mutation far more likely to lead to a defective protein than a point mutation?

A genetic study conducted over multiple generations found that the frequency of genotypes in the first generation were AA: 0.36, Aa: 0.48, aa: 0.16.In the second generation, genotype frequencies shifted to AA: 0.16, Aa: 0.48, aa: 0.36.According to the Hardy-Weinberg equilibrium, we can assume:

Evolution can best be defined as:

In certain species of nonhuman primates there are groups where only one dominant female has access to mates.The other females must wait until the opportunity to mate presents itself.This will have direct impacts on "fitness," influencing which of the following?

The best-documented case of industrial melanism involves:

The absence of the A and B alleles in Native American populations is a result of:

Why is the incidence of sickle-cell anemia an excellent example of a "balanced polymorphism," in which two or more alleles are maintained by natural selection in a population?

The evolution of the modern horse with a single hoof on each limb from a dog-sized ancestral species with multiple digits is an example of:

What is a polymorphic trait? Provide two examples of polymorphic traits in modern humans, and give one example of a monomorphic trait.

The southern migration of which African people may have led to a significant increase in the incidence of malaria?

Which of the evolutionary forces is most likely to decrease variation between populations?

A random change in allele frequencies over time is known as:

In a classroom taste test for PTC the genotype frequency was determined to be P = 0.35 and Q = 0.65.After applying the Hardy-Weinberg equation, the percentage of genotypes was found to be as follows:

A genetic study conducted over two generations found that the frequencies of genotypes in the first generation were AA: 0.36, Aa: 0.48, aa: 0.16.In the second generation, genotype frequencies remained the same.According to the Hardy-Weinberg equilibrium, we can assume:

Studies of Galapagos finches have found that at certain points in time all finches on the island have either wide beaks or sharp narrow beaks.The type of evolution that leads to this phenotype distribution is _______ selection.

Explain how the founder effect can lead to a descendent population that differs greatly from its parent population over a relatively short period of time.

Patrilocal societies are expected to display:

An individual who displays the disease sickle-cell anemia must have inherited the deleterious allele from both phenotypically normal parents.This individual is therefore:

What Is Physical Anthropology

Evolution: Constructing a Fundamental Scientific Theory

Genetics: Reproducing Life and Producing Variation

Biology in the Present: Living People

Biology in the Present: the Other Living Primates

Primate Sociality, Social Behavior, and Culture

Fossils and Their Place in Time and Nature

Primate Origins and Evolution: the First 50 Million Years

Early Hominin Origins and Evolution: the Roots of Humanity

The Origins and Evolution of Early Homo

The Origins, Evolution, and Dispersal of Modern People

Our Last 10,000 Years: Agriculture, Population, and Biology

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Exam 4: Genes and Their Evolution: Population Genetics

Why is the peppered moth an excellent example of directional selection?

Familial hypercholesterolemia, an autosomal dominant disease, is five times more frequent in the Afrikaner population of South Africa than in the original population of Europe from which the ancestors to the Afrikaners immigrated.This represents an example of:

Why is a frameshift mutation far more likely to lead to a defective protein than a point mutation?

A genetic study conducted over multiple generations found that the frequency of genotypes in the first generation were AA: 0.36, Aa: 0.48, aa: 0.16.In the second generation, genotype frequencies shifted to AA: 0.16, Aa: 0.48, aa: 0.36.According to the Hardy-Weinberg equilibrium, we can assume:

Evolution can best be defined as:

In certain species of nonhuman primates there are groups where only one dominant female has access to mates.The other females must wait until the opportunity to mate presents itself.This will have direct impacts on "fitness," influencing which of the following?

The best-documented case of industrial melanism involves:

The absence of the A and B alleles in Native American populations is a result of:

Why is the incidence of sickle-cell anemia an excellent example of a "balanced polymorphism," in which two or more alleles are maintained by natural selection in a population?

The evolution of the modern horse with a single hoof on each limb from a dog-sized ancestral species with multiple digits is an example of:

What is a polymorphic trait? Provide two examples of polymorphic traits in modern humans, and give one example of a monomorphic trait.

The southern migration of which African people may have led to a significant increase in the incidence of malaria?

Which of the evolutionary forces is most likely to decrease variation between populations?

A random change in allele frequencies over time is known as:

In a classroom taste test for PTC the genotype frequency was determined to be P = 0.35 and Q = 0.65.After applying the Hardy-Weinberg equation, the percentage of genotypes was found to be as follows:

A genetic study conducted over two generations found that the frequencies of genotypes in the first generation were AA: 0.36, Aa: 0.48, aa: 0.16.In the second generation, genotype frequencies remained the same.According to the Hardy-Weinberg equilibrium, we can assume:

Studies of Galapagos finches have found that at certain points in time all finches on the island have either wide beaks or sharp narrow beaks.The type of evolution that leads to this phenotype distribution is _______ selection.

Explain how the founder effect can lead to a descendent population that differs greatly from its parent population over a relatively short period of time.

Patrilocal societies are expected to display:

An individual who displays the disease sickle-cell anemia must have inherited the deleterious allele from both phenotypically normal parents.This individual is therefore:

What Is Physical Anthropology

Evolution: Constructing a Fundamental Scientific Theory

Genetics: Reproducing Life and Producing Variation

Biology in the Present: Living People

Biology in the Present: the Other Living Primates

Primate Sociality, Social Behavior, and Culture

Fossils and Their Place in Time and Nature

Primate Origins and Evolution: the First 50 Million Years

Early Hominin Origins and Evolution: the Roots of Humanity

The Origins and Evolution of Early Homo

The Origins, Evolution, and Dispersal of Modern People

Our Last 10,000 Years: Agriculture, Population, and Biology

Filters