Question 1

What types of mutations adds material to the genome?

Accepted Answer

A) inversions 
B) duplications 
C) deletions 
D) translocations 
A) inversions 
B) duplications 
C) deletions 
D) translocations

Question 2

In terms of evolution, what might be the results of transposable elements in a species' genome?

Accepted Answer

A) novel mutations, some of which may be beneficial 
B) transposons do not have any role in evolution 
C) generation of potentially detrimental inversions 
D) increase the point mutation rate of cells 
A) novel mutations, some of which may be beneficial 
B) transposons do not have any role in evolution 
C) generation of potentially detrimental inversions 
D) increase the point mutation rate of cells

Question 3

Inversions may be difficult to detect because they

Accepted Answer

A) never visibly change chromosome banding patterns. 
B) increase recombination in heterozygotes. 
C) do not usually cause an abnormal phenotype. 
D) normally are removed immediately in natural populations. 
A) never visibly change chromosome banding patterns. 
B) increase recombination in heterozygotes. 
C) do not usually cause an abnormal phenotype. 
D) normally are removed immediately in natural populations.

Question 4

An acentric fragment can be the result of crossing over between a normal chromosome and a chromosome that has undergone what kind of mutation?

Accepted Answer

A) paracentric inversion 
B) duplication 
C) translocation 
D) pericentric inversion 
A) paracentric inversion 
B) duplication 
C) translocation 
D) pericentric inversion

Question 5

An enzyme that catalyzes a transposition event

Accepted Answer

The answer of An enzyme that catalyzes a transposition event...

Question 6

What is NOT a mechanism by which transposon mobilization may be controlled by the cell?

Accepted Answer

A) Transcriptional control of the transposon genes 
B) Translational control of transposon transcripts 
C) Increased degradation of retrotransposon intermediates 
D) Alternative splicing of a transposon transcript 
A) Transcriptional control of the transposon genes 
B) Translational control of transposon transcripts 
C) Increased degradation of retrotransposon intermediates 
D) Alternative splicing of a transposon transcript

Question 7

For an organism to survive a deletion of more than a few genes, it must carry a nondeleted homolog of the deleted chromosome.This organism is known as

Accepted Answer

A) a deletion heterozygote. 
B) a deletion homozygote. 
C) dosage compensation. 
D) a triplolethal chromosome. 
A) a deletion heterozygote. 
B) a deletion homozygote. 
C) dosage compensation. 
D) a triplolethal chromosome.

Question 8

FISH analysis would least likely be used to detect

Accepted Answer

A) translocations. 
B) duplications. 
C) deletions. 
D) point mutations. 
A) translocations. 
B) duplications. 
C) deletions. 
D) point mutations.

Question 9

Monoploids are useful in plant breeding because

Accepted Answer

A) they can be grown into mature plants with desirable recessive traits. 
B) none of the embryoids will have deleterious traits 
C) they make it easier to create polyploid plants. 
D) they are typically resistant to commercial herbicides. 
A) they can be grown into mature plants with desirable recessive traits. 
B) none of the embryoids will have deleterious traits 
C) they make it easier to create polyploid plants. 
D) they are typically resistant to commercial herbicides.

Question 10

Turner syndrome, XO, is a sex chromosome aneuploidy.Of the effects listed below, which one is not usually seen in this syndrome?

Accepted Answer

A) unusually short stature 
B) infertility 
C) skeletal abnormalities 
D) unusually long limbs 
A) unusually short stature 
B) infertility 
C) skeletal abnormalities 
D) unusually long limbs

Question 11

Moves in the genome with the aid of an RNA intermediate

Accepted Answer

The answer of Moves in the genome with the aid...

Question 12

Hybrids in which the chromosome sets come from two distinct, though related, species are known as

Accepted Answer

A) autopolyploids. 
B) allopolyploids. 
C) amphiploids. 
D) bivalents. 
A) autopolyploids. 
B) allopolyploids. 
C) amphiploids. 
D) bivalents.

Question 13

In terms of evolution, what might be the outcome of repeated duplications of one or a few genes in a species' genome?

Accepted Answer

A) tetraploidy 
B) semisterility 
C) gene families 
D) create repetitive DNA that is of no use to the cell. 
A) tetraploidy 
B) semisterility 
C) gene families 
D) create repetitive DNA that is of no use to the cell.

Question 14

An example in humans of a disease or syndrome that can occur at higher frequency when a deleted copy of a gene is inherited is

Accepted Answer

A) triplolethal. 
B) scarlet eyes. 
C) retinoblastoma. 
D) cataracts. 
A) triplolethal. 
B) scarlet eyes. 
C) retinoblastoma. 
D) cataracts.

Question 15

Karyotypes generally remain constant within a species because

Accepted Answer

A) rearrangements occur frequently. 
B) changes in chromosome number occur infrequently. 
C) genetic instabilities produced by genomic changes usually are at a selective disadvantage. 
D) genetic imbalances are often at a selective advantage. 
A) rearrangements occur frequently. 
B) changes in chromosome number occur infrequently. 
C) genetic instabilities produced by genomic changes usually are at a selective disadvantage. 
D) genetic imbalances are often at a selective advantage.

Question 16

One major difference between DNA and retrotransposons is that

Accepted Answer

A) During transposition retrotransposons go through an RNA form that is copied back into DNA 
B) During transposition DNA transposons go through an RNA form that is copied back into DNA 
C) In humans DNA transposons are the only type of transposons that move 
D) DNA transposons are bordered by poly-A tracts 
A) During transposition retrotransposons go through an RNA form that is copied back into DNA 
B) During transposition DNA transposons go through an RNA form that is copied back into DNA 
C) In humans DNA transposons are the only type of transposons that move 
D) DNA transposons are bordered by poly-A tracts

Question 17

What are the four major classes of chromosomal rearrangements?

Accepted Answer

A) Inversions, duplications, translocations, deletions 
B) Duplications, reciprocal translocations, non-reciprocal translocations, inversions 
C) Deletions, inversions, duplications, reciprocal translocations 
D) Translocations, pericentric inversions, paracentric inversions, deletions 
A) Inversions, duplications, translocations, deletions 
B) Duplications, reciprocal translocations, non-reciprocal translocations, inversions 
C) Deletions, inversions, duplications, reciprocal translocations 
D) Translocations, pericentric inversions, paracentric inversions, deletions

Question 18

Which of the following do translocations and inversions not have in common?

Accepted Answer

A) don't alter the amount of DNA in the genome 
B) ability to alter gene function 
C) use of inversion loops during crossing over 
D) catalysts of speciation 
A) don't alter the amount of DNA in the genome 
B) ability to alter gene function 
C) use of inversion loops during crossing over 
D) catalysts of speciation

Question 19

Deletions can be useful for mapping

Accepted Answer

A) when the other allele is recessive that results in a viable but detectable phenotype 
B) when the other allele is dominant. 
C) if the other allele results in no detectable phenotype. 
D) only when the individual has both alleles deleted. 
A) when the other allele is recessive that results in a viable but detectable phenotype 
B) when the other allele is dominant. 
C) if the other allele results in no detectable phenotype. 
D) only when the individual has both alleles deleted.

Question 20

A piece of DNA that can use transposase to move from one place in the genome to another is known as a(n)

Accepted Answer

A) regulatory region 
B) duplication. 
C) translocation. 
D) transposable element. 
A) regulatory region 
B) duplication. 
C) translocation. 
D) transposable element.

Exam 12: Chromosomal Rearrangements and Changes in Chromosome Number

What types of mutations adds material to the genome?

In terms of evolution, what might be the results of transposable elements in a species' genome?

Inversions may be difficult to detect because they

An acentric fragment can be the result of crossing over between a normal chromosome and a chromosome that has undergone what kind of mutation?

An enzyme that catalyzes a transposition event

What is NOT a mechanism by which transposon mobilization may be controlled by the cell?

For an organism to survive a deletion of more than a few genes, it must carry a nondeleted homolog of the deleted chromosome.This organism is known as

FISH analysis would least likely be used to detect

Monoploids are useful in plant breeding because

Turner syndrome, XO, is a sex chromosome aneuploidy.Of the effects listed below, which one is not usually seen in this syndrome?

Moves in the genome with the aid of an RNA intermediate

Hybrids in which the chromosome sets come from two distinct, though related, species are known as

In terms of evolution, what might be the outcome of repeated duplications of one or a few genes in a species' genome?

An example in humans of a disease or syndrome that can occur at higher frequency when a deleted copy of a gene is inherited is

Karyotypes generally remain constant within a species because

One major difference between DNA and retrotransposons is that

What are the four major classes of chromosomal rearrangements?

Which of the following do translocations and inversions not have in common?

Deletions can be useful for mapping

A piece of DNA that can use transposase to move from one place in the genome to another is known as a(n)

Genetics: The Study of Biological Information

Mendels Principles of Heredity

Extensions to Mendels Laws

The Chromosome Theory of Inheritance

Linkage, Recombination, and the Mapping of Genes on Chromosomes

DNA Structure, Replication, and Recombination

Anatomy and Function of a Gene: Dissection Through Mutation

Gene Expression: The Flow of Information From DNA to RNA to Protein

Digital Analysis of Genomes

Analyzing Genomic Information

The Eukaryotic Chromosome

Bacterial Genetics

Organellar Inheritance

Gene Regulation in Prokaryotes

Gene Regulation in Eukaryotes

Manipulating the Genomes of Eukaryotes

The Genetic Analysis of Development

The Genetics of Cancer

Variation and Selection in Populations

Genetics of Complex Traits

Filters