Question 1

Assume that in a Hardy-Weinberg population,9% of the individuals are of the homozygous recessive phenotype.What percentage are homozygous dominant?

Accepted Answer

The answer of Assume that in a Hardy-Weinberg population,9% of...

Question 2

Assume that a trait is caused by the homozygous state of a gene that is recessive and autosomal.Nine percent of the individuals in a given population express the phenotype caused by this gene.What percentage of the individuals would be heterozygous for the gene? Assume that the population is in Hardy-Weinberg equilibrium.

Accepted Answer

The answer of Assume that a trait is caused by...

Question 3

What information have the results of mitochondrial DNA analysis offered concerning the phylogenetic relationships between Neanderthals and modern humans?

Accepted Answer

Although Neanderthals and huma

Question 4

Conservation of amino acid sequence among distantly related groups of organisms is suggestive of an important function of that sequence.

Accepted Answer

A) True 
 B)False

Question 5

If a gene has three alleles in a population,their frequencies must add up to 1.5.

Accepted Answer

A) True 
 B)False

Question 6

Evolution is dependent on genetic diversity in the evolving population.

Accepted Answer

A) True 
 B)False

Question 7

Migration occurs when individuals move between populations.Considering a single pair of alleles,A and a,what formula is used to indicate the new frequency of A in one generation of migration?

Accepted Answer

pᵢ' = (1 -

Question 8

In the evolutionary sense,what is meant by the term molecular clock?

Accepted Answer

Molecular clocks are amino acid or nucle

Question 9

A number of mechanisms operate to maintain genetic diversity in a population.Why is such diversity favored?

Accepted Answer

A)  Homozygosity is an evolutionary advantage. 
B)  Diversity leads to inbreeding advantages. 
C)  Genetic diversity may better adapt a population to inevitable changes in the environment. 
D)  Greater genetic diversity increases the chances of haploidy. 
E)  Genetic diversity helps populations avoid diploidy. 
A)  Homozygosity is an evolutionary advantage. 
B)  Diversity leads to inbreeding advantages. 
C)  Genetic diversity may better adapt a population to inevitable changes in the environment. 
D)  Greater genetic diversity increases the chances of haploidy. 
E)  Genetic diversity helps populations avoid diploidy.

Question 10

Natural selection occurs when there is nonrandom elimination of genotypes from a population due to differences in viability or reproductive success.

Accepted Answer

A) True 
 B)False

Question 11

Given an inheritance pattern of incomplete dominance and 81 flowers that are red (R¹R¹),18 flowers that are pink (R¹R²),and 1 flower that is white (R²R²),the frequency of the R¹ allele is 0.9.

Accepted Answer

A) True 
 B)False

Question 12

Genetic drift is primarily associated with relatively small breeding populations.

Accepted Answer

A) True 
 B)False

Question 13

In a population of 100 individuals,49% are of the NN blood type.What percentage is expected to be MN assuming Hardy-Weinberg equilibrium conditions?

Accepted Answer

A)  9% 
B)  21% 
C)  42% 
D)  51% 
E)  There is insufficient information to answer this question. 
A)  9% 
B)  21% 
C)  42% 
D)  51% 
E)  There is insufficient information to answer this question.

Question 14

Albinism is an autosomal recessive trait in humans.Assume that there are 100 albinos (aa)in a population of 1 million.How many individuals would be expected to be homozygous normal (AA)under equilibrium conditions?

Accepted Answer

A)  100 
B)  10,000 
C)  19,800 
D)  980,100 
E)  999,900 
A)  100 
B)  10,000 
C)  19,800 
D)  980,100 
E)  999,900

Question 15

In a population that meets the Hardy-Weinberg equilibrium assumptions,81% of the individuals are homozygous for a recessive allele.What percentage of the individuals would be expected to be heterozygous for this locus in the next generation?

Accepted Answer

The answer of In a population that meets the Hardy-Weinberg...

Question 16

What does the variable 2pq represent?

Accepted Answer

the expected frequen

Question 17

Which general term is used to group various biological and behavioral properties of organisms that act to prevent or reduce interbreeding?

Accepted Answer

A)  phyletic evolution 
B)  allopatric speciation 
C)  reproductive isolating mechanisms 
D)  inbreeding 
E)  genetic divergence 
A)  phyletic evolution 
B)  allopatric speciation 
C)  reproductive isolating mechanisms 
D)  inbreeding 
E)  genetic divergence

Question 18

One of the Hardy-Weinberg assumptions states that all genotypes in the population are free of selective advantage.What influence might a selective advantage of a genotype have on a Hardy-Weinberg equilibrium?

Accepted Answer

Certain alleles will

Exam 25: Population and Evolutionary Genetics

Assume that in a Hardy-Weinberg population,9% of the individuals are of the homozygous recessive phenotype.What percentage are homozygous dominant?

What information have the results of mitochondrial DNA analysis offered concerning the phylogenetic relationships between Neanderthals and modern humans?

Conservation of amino acid sequence among distantly related groups of organisms is suggestive of an important function of that sequence.

If a gene has three alleles in a population,their frequencies must add up to 1.5.

Evolution is dependent on genetic diversity in the evolving population.

Migration occurs when individuals move between populations.Considering a single pair of alleles,A and a,what formula is used to indicate the new frequency of A in one generation of migration?

In the evolutionary sense,what is meant by the term molecular clock?

A number of mechanisms operate to maintain genetic diversity in a population.Why is such diversity favored?

Natural selection occurs when there is nonrandom elimination of genotypes from a population due to differences in viability or reproductive success.

Given an inheritance pattern of incomplete dominance and 81 flowers that are red (R¹R¹),18 flowers that are pink (R¹R²),and 1 flower that is white (R²R²),the frequency of the R¹ allele is 0.9.

Genetic drift is primarily associated with relatively small breeding populations.

In a population of 100 individuals,49% are of the NN blood type.What percentage is expected to be MN assuming Hardy-Weinberg equilibrium conditions?

Albinism is an autosomal recessive trait in humans.Assume that there are 100 albinos (aa)in a population of 1 million.How many individuals would be expected to be homozygous normal (AA)under equilibrium conditions?

In a population that meets the Hardy-Weinberg equilibrium assumptions,81% of the individuals are homozygous for a recessive allele.What percentage of the individuals would be expected to be heterozygous for this locus in the next generation?

What does the variable 2pq represent?

Which general term is used to group various biological and behavioral properties of organisms that act to prevent or reduce interbreeding?

One of the Hardy-Weinberg assumptions states that all genotypes in the population are free of selective advantage.What influence might a selective advantage of a genotype have on a Hardy-Weinberg equilibrium?

Introduction to Genetics

Mitosis and Meiosis

Mendelian Genetics

Extensions of Mendelian Genetics

Chromosome Mapping in Eukaryotes

Genetic Analysis and Mapping in Bacteria and Bacteriophages

Sex Determination and Sex Chromosomes

Chromosome Mutations: Variation in Number and Arrangement

Extranuclear Inheritance

DNA Structure and Analysis

DNA Replication and Recombination

DNA Organization in Chromosomes

The Genetic Code and Transcription

Translation and Proteins

Gene Mutation,dna Repair,and Transposition

Regulation of Gene Expression in Prokaryotes

Regulation of Gene Expression in Eukaryotes

Developmental Genetics

Cancer and Regulation of the Cell Cycle

Recombinant DNA Technology

Genomics, bioinformatics, and Proteomics

Applications and Ethics of Genetic Engineering and Biotechnology

Quantitative Genetics and Multifactorial Traits

Neurogenetics

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