Question 1

Crossing-over

Accepted Answer

A)  involves the physical exchange of parts of homologous chromosomes. 
B)  occurs during mitosis. 
C)  involves the fusion of gametes to restore the diploid number of chromosomes. 
D)  occurs in somatic cells. 
A)  involves the physical exchange of parts of homologous chromosomes. 
B)  occurs during mitosis. 
C)  involves the fusion of gametes to restore the diploid number of chromosomes. 
D)  occurs in somatic cells.

Question 2

Using the figure, which of the amino acid sequences would be generated from the RNA sequence: CGA GGC UUA ACG (read in the 3' direction)?

Accepted Answer

A)  arginine; glycine; leucine; threonine 
B)  arginine; glycine; phenylalanine; threonine 
C)  serine; glycine; isoleucine; threonine 
D)  serine; arginine; isoleucine; serine 
A)  arginine; glycine; leucine; threonine 
B)  arginine; glycine; phenylalanine; threonine 
C)  serine; glycine; isoleucine; threonine 
D)  serine; arginine; isoleucine; serine

Question 3

Gregor Mendel's law of segregation states that

Accepted Answer

A)  each diploid individual has two copies of every gene, and that the two gene copies separate with equal probability into the individual's gametes. 
B)  two copies of each gene are found in a gamete. 
C)  traits from each parent are permanently blended in their offspring. 
D)  the allele passed down to the next generation at one locus is independent of which allele is passed down at another locus. 
A)  each diploid individual has two copies of every gene, and that the two gene copies separate with equal probability into the individual's gametes. 
B)  two copies of each gene are found in a gamete. 
C)  traits from each parent are permanently blended in their offspring. 
D)  the allele passed down to the next generation at one locus is independent of which allele is passed down at another locus.

Question 4

Which of the mutations in the figure depicts a nonsense mutation?

Accepted Answer

A)  Mutation A 
B)  Mutation B 
C)  Mutation C 
D)  A nonsense mutation is not pictured. 
A)  Mutation A 
B)  Mutation B 
C)  Mutation C 
D)  A nonsense mutation is not pictured.

Question 5

Proteins consist of long chains of ________ linked together.

Accepted Answer

A)  nitrogenous bases 
B)  amino acids 
C)  mRNA 
D)  codons 
A)  nitrogenous bases 
B)  amino acids 
C)  mRNA 
D)  codons

Question 6

Which of the following statements is FALSE?

Accepted Answer

A)  Epigenetic changes play important roles in organismal development, such as during cell differentiation. 
B)  Epigenetic information cannot be passed down across generations. 
C)  Epigenetic changes during prenatal development or early in life are responsible for aspects of developmental plasticity. 
D)  Most epigenetic changes to the genome are reset at each generation. 
A)  Epigenetic changes play important roles in organismal development, such as during cell differentiation. 
B)  Epigenetic information cannot be passed down across generations. 
C)  Epigenetic changes during prenatal development or early in life are responsible for aspects of developmental plasticity. 
D)  Most epigenetic changes to the genome are reset at each generation.

Question 7

Which of the following statements is FALSE?

Accepted Answer

A)  Gregor Mendel examined seven different characters of pea plants, including flower color. 
B)  Gregor Mendel came to two important conclusions from his experiments on pea plants, and these are known as Mendel's laws. 
C)  Gregor Mendel's work went relatively undiscovered until around 1900. 
D)  Gregor Mendel and Charles Darwin were colleagues. 
A)  Gregor Mendel examined seven different characters of pea plants, including flower color. 
B)  Gregor Mendel came to two important conclusions from his experiments on pea plants, and these are known as Mendel's laws. 
C)  Gregor Mendel's work went relatively undiscovered until around 1900. 
D)  Gregor Mendel and Charles Darwin were colleagues.

Question 8

How many cross-over events are depicted in the figure?

Accepted Answer

A)  zero 
B)  one 
C)  two 
D)  four 
A)  zero 
B)  one 
C)  two 
D)  four

Question 9

How many copies of each chromosome does a tetraploid organism have in its somatic cells?

Accepted Answer

A)  one 
B)  two 
C)  four 
D)  eight 
A)  one 
B)  two 
C)  four 
D)  eight

Question 10

Where on a DNA molecule would you expect to find genes that are unexpressed?

Accepted Answer

A)  where the chromatin is decondensed 
B)  where RNA polymerase binds to the promoter 
C)  where the chromatin is condensed 
D)  where there are histones 
A)  where the chromatin is decondensed 
B)  where RNA polymerase binds to the promoter 
C)  where the chromatin is condensed 
D)  where there are histones

Question 11

Which of the following is FALSE regarding DNA?

Accepted Answer

A)  DNA is a polymer composed primarily of repeating five carbon sugars. 
B)  DNA contains four types of nitrogenous bases. 
C)  DNA consists of two strands of nucleotides connected by hydrogen bonds. 
D)  DNA nitrogenous bases can each pair with any other base. 
A)  DNA is a polymer composed primarily of repeating five carbon sugars. 
B)  DNA contains four types of nitrogenous bases. 
C)  DNA consists of two strands of nucleotides connected by hydrogen bonds. 
D)  DNA nitrogenous bases can each pair with any other base.

Question 12

Which of the diagrams shown illustrates an inversion? A

B

C

D

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
A)  A 
B)  B 
C)  C 
D)  D

Question 13

Which of the following statements regarding the difference between RNA and DNA is true?

Accepted Answer

A)  Only RNA uses guanine. 
B)  Only RNA uses cytosine. 
C)  Only RNA uses adenine. 
D)  Only RNA uses uracil. 
A)  Only RNA uses guanine. 
B)  Only RNA uses cytosine. 
C)  Only RNA uses adenine. 
D)  Only RNA uses uracil.

Question 14

Nucleotide sequences of a gene that code for protein products (as opposed to noncoding regions) are known as

Accepted Answer

A)  mRNA. 
B)  introns. 
C)  exons. 
D)  codons. 
A)  mRNA. 
B)  introns. 
C)  exons. 
D)  codons.

Question 15

Many trans-acting regulatory elements reside on a separate chromosome from the genes that they regulate. In such cases, the regulatory element is ________, relative to the gene.

Accepted Answer

A)  unlinked 
B)  linked 
C)  dominant 
D)  recessive 
A)  unlinked 
B)  linked 
C)  dominant 
D)  recessive

Question 16

DNA molecules can be very long. To better pack them into cells, DNA is often

Accepted Answer

A)  reduced to a single strand. 
B)  coiled around proteins called histones. 
C)  broken into smaller molecules. 
D)  equally divided between neighboring cells. 
A)  reduced to a single strand. 
B)  coiled around proteins called histones. 
C)  broken into smaller molecules. 
D)  equally divided between neighboring cells.

Question 17

Joan Peris and her colleagues induced mutations in a virus called bacteriophage f1. What can be concluded from the distribution of observed fitness effects as a result of the mutations?

Accepted Answer

Most mutations are either neutral or del

Question 18

Regulatory elements

Accepted Answer

A)  are always found close to the gene they regulate. 
B)  control the rate of mRNA production. 
C)  are found only in prokaryotes. 
D)  have no effect on phenotype. 
A)  are always found close to the gene they regulate. 
B)  control the rate of mRNA production. 
C)  are found only in prokaryotes. 
D)  have no effect on phenotype.

Question 19

Which of the following statements is true?

Accepted Answer

A)  Most mutations are either neutral or deleterious with respect to fitness. 
B)  Most mutations are beneficial with respect to fitness. 
C)  In order for fitness to be affected, a mutation must affect a large portion of a gene. 
D)  Only a small fraction of mutations are lethal. 
A)  Most mutations are either neutral or deleterious with respect to fitness. 
B)  Most mutations are beneficial with respect to fitness. 
C)  In order for fitness to be affected, a mutation must affect a large portion of a gene. 
D)  Only a small fraction of mutations are lethal.

Question 20

Which type of point mutation occurs more frequently: transitions or transversions?

Accepted Answer

There are twice as many ways to change a

Crossing-over

Using the figure, which of the amino acid sequences would be generated from the RNA sequence: CGA GGC UUA ACG (read in the 3' direction)?

Gregor Mendel's law of segregation states that

Which of the mutations in the figure depicts a nonsense mutation?

Proteins consist of long chains of ________ linked together.

Which of the following statements is FALSE?

Which of the following statements is FALSE?

How many cross-over events are depicted in the figure?

How many copies of each chromosome does a tetraploid organism have in its somatic cells?

Where on a DNA molecule would you expect to find genes that are unexpressed?

Which of the following is FALSE regarding DNA?

Which of the diagrams shown illustrates an inversion? A B C D

Which of the following statements regarding the difference between RNA and DNA is true?

Nucleotide sequences of a gene that code for protein products (as opposed to noncoding regions) are known as

Many trans-acting regulatory elements reside on a separate chromosome from the genes that they regulate. In such cases, the regulatory element is ________, relative to the gene.

DNA molecules can be very long. To better pack them into cells, DNA is often

Joan Peris and her colleagues induced mutations in a virus called bacteriophage f1. What can be concluded from the distribution of observed fitness effects as a result of the mutations?

Regulatory elements

Which of the following statements is true?

Which type of point mutation occurs more frequently: transitions or transversions?

An Overview of Evolutionary Biology

Early Evolutionary Ideas and Darwin S Insight

Natural Selection

Phylogeny and Evolutionary History

Inferring Phylogeny

The Genetics of Populations

Evolution in Finite Populations

Evolution at Multiple Loci

Genome Evolution

The Origin and Evolution of Early Life

Major Transitions

Evolution and Development

Species and Speciation

Extinction and Evolutionary Trends

The Evolution of Sex

The Evolution of Sociality

Coevolution

Human Evolution

Evolution and Medicine

Filters

Exam 6: Transmission Genetics and the Sources of Genetic Variation

Crossing-over

Using the figure, which of the amino acid sequences would be generated from the RNA sequence: CGA GGC UUA ACG (read in the 3' direction)?

Gregor Mendel's law of segregation states that

Which of the mutations in the figure depicts a nonsense mutation?

Proteins consist of long chains of ________ linked together.

Which of the following statements is FALSE?

Which of the following statements is FALSE?

How many cross-over events are depicted in the figure?

How many copies of each chromosome does a tetraploid organism have in its somatic cells?

Where on a DNA molecule would you expect to find genes that are unexpressed?

Which of the following is FALSE regarding DNA?

Which of the diagrams shown illustrates an inversion? A B C D

Which of the following statements regarding the difference between RNA and DNA is true?

Nucleotide sequences of a gene that code for protein products (as opposed to noncoding regions) are known as

Many trans-acting regulatory elements reside on a separate chromosome from the genes that they regulate. In such cases, the regulatory element is ________, relative to the gene.

DNA molecules can be very long. To better pack them into cells, DNA is often

Joan Peris and her colleagues induced mutations in a virus called bacteriophage f1. What can be concluded from the distribution of observed fitness effects as a result of the mutations?

Regulatory elements

Which of the following statements is true?

Which type of point mutation occurs more frequently: transitions or transversions?

An Overview of Evolutionary Biology

Early Evolutionary Ideas and Darwin S Insight

Natural Selection

Phylogeny and Evolutionary History

Inferring Phylogeny

The Genetics of Populations

Evolution in Finite Populations

Evolution at Multiple Loci

Genome Evolution

The Origin and Evolution of Early Life

Major Transitions

Evolution and Development

Species and Speciation

Extinction and Evolutionary Trends

The Evolution of Sex

The Evolution of Sociality

Coevolution

Human Evolution

Evolution and Medicine

Filters