Question 1

Which of the following elements exhibit homogeneous A:T sequences at one end?

Accepted Answer

A)  Tn5 
B)  Ty elements 
C)  Mariner 
D)  P elements 
E)  Retroposons 
A)  Tn5 
B)  Ty elements 
C)  Mariner 
D)  P elements 
E)  Retroposons

Question 2

Would you expect genes encoded by retrotransposons to contain introns? Why?

Accepted Answer

No.The RNA intermediate is rev

Question 3

Eukaryotic DNA sequences that can move from one position to another are known as

Accepted Answer

A)  DNA fingerprints. 
B)  plasmids. 
C)  transposons. 
D)  jumping chromosomes. 
E)  walking chromosomes. 
A)  DNA fingerprints. 
B)  plasmids. 
C)  transposons. 
D)  jumping chromosomes. 
E)  walking chromosomes.

Question 4

Which of the following is not true regarding replicative transposition?

Accepted Answer

A)  A transposase encoded by the element mediates an interaction between the element and a potential insertion site. 
B)  The element is replicated and one copy of it is inserted at the new site while one copy remains at the original site. 
C)  There is a net gain of one copy of the element. 
D)  All of these are true. 
E)  All of these are false. 
A)  A transposase encoded by the element mediates an interaction between the element and a potential insertion site. 
B)  The element is replicated and one copy of it is inserted at the new site while one copy remains at the original site. 
C)  There is a net gain of one copy of the element. 
D)  All of these are true. 
E)  All of these are false.

Question 5

Plasmids that can move transposons from one bacterial cell to another are known as

Accepted Answer

A)  conjugative R plasmids. 
B)  F plasmids. 
C)  Col plasmids. 
D)  Tn3 elements. 
E)  All of these 
A)  conjugative R plasmids. 
B)  F plasmids. 
C)  Col plasmids. 
D)  Tn3 elements. 
E)  All of these

Question 6

Which enzyme catalyzes the excision and insertion events conducted by transposons?

Accepted Answer

A)  Transformase 
B)  Transposase 
C)  Ligase 
D)  Helicase 
E)  Polymerase 
A)  Transformase 
B)  Transposase 
C)  Ligase 
D)  Helicase 
E)  Polymerase

Question 7

In your search for mutants of "your favorite gene" (yfg)you identify a mutant which you believe to be a transposon insertion.At your disposal you have a point mutant of yfg.How can you distinguish this potential yfg transposon disruption from a non-transposon mutation?

Accepted Answer

Identify the reversion frequency of your

Question 8

Which transposable element found in bacteria is the simplest,containing only genes involved in transposition?

Accepted Answer

A)  IS elements 
B)  Composite transposons 
C)  Tn3 
D)  Tac 
E)  None of these 
A)  IS elements 
B)  Composite transposons 
C)  Tn3 
D)  Tac 
E)  None of these

Question 9

Short identical sequences at the ends of an IS sequence are known as

Accepted Answer

A)  transposon telemorases. 
B)  inverted terminal repeats. 
C)  correlated terminal repeats. 
D)  transposable terminal repeats. 
E)  All of these f) None of these 
A)  transposon telemorases. 
B)  inverted terminal repeats. 
C)  correlated terminal repeats. 
D)  transposable terminal repeats. 
E)  All of these f) None of these

Question 10

Mutations generated by transposons can be located from a large,heterogeneous mixture of DNA by the known sequence of the transposon.What is this called?

Accepted Answer

A)  Transposon localization 
B)  Transposon tagging 
C)  Transposon linking 
D)  Transposon marking 
E)  Transposon identification 
A)  Transposon localization 
B)  Transposon tagging 
C)  Transposon linking 
D)  Transposon marking 
E)  Transposon identification

Question 11

Which of the following is true regarding the Ds element in maize?
1)Ds elements are structurally heterogeneous
2)Some Ds elements appear to have been derived from Ac elements by the loss of internal sequences
3)They all possess the same inverted terminal repeats as Ac elements

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  1 and 2 
E)  All of these 
A)  1 
B)  2 
C)  3 
D)  1 and 2 
E)  All of these

Question 12

Which part of the conjugative R plasmid contains the genes for antibiotic resistance?

Accepted Answer

A)  RTF 
B)  R determinant 
C)  ORI 
D)  Promoter 
E)  Enhancer 
A)  RTF 
B)  R determinant 
C)  ORI 
D)  Promoter 
E)  Enhancer

Question 13

Replicative transposition can occur in which of the following organisms?

Accepted Answer

A)  C. elegans 
B)  E. coli 
C)  S. aureus 
D)  E. coli and S. aureus 
E)  All of these 
A)  C. elegans 
B)  E. coli 
C)  S. aureus 
D)  E. coli and S. aureus 
E)  All of these

Question 14

What is formed when two IS elements insert near each other?

Accepted Answer

A)  Replicative transposon 
B)  Composite transposon 
C)  Inverted terminal repeats 
D)  Inverted terminal duplications 
E)  Inverted terminal deletions 
A)  Replicative transposon 
B)  Composite transposon 
C)  Inverted terminal repeats 
D)  Inverted terminal duplications 
E)  Inverted terminal deletions

Question 15

Ds elements are characterized by a peculiar piggybacking arrangement in which one Ds element is inserted into another,but in an inverted orientation.These are known as

Accepted Answer

A)  aberrant Ds elements. 
B)  unusual Ds elements. 
C)  double Ds elements. 
D)  aberrant Ds elements and unusual Ds elements. 
E)  All of these 
A)  aberrant Ds elements. 
B)  unusual Ds elements. 
C)  double Ds elements. 
D)  aberrant Ds elements and unusual Ds elements. 
E)  All of these

Question 16

How are Tn3 elements classified?

Accepted Answer

A)  Cut and paste transposon 
B)  Replicative transposon 
C)  Retrotransposon 
D)  Retrovirus-like transposon 
E)  All of these 
A)  Cut and paste transposon 
B)  Replicative transposon 
C)  Retrotransposon 
D)  Retrovirus-like transposon 
E)  All of these

Which of the following elements exhibit homogeneous A:T sequences at one end?

Would you expect genes encoded by retrotransposons to contain introns? Why?

Eukaryotic DNA sequences that can move from one position to another are known as

Which of the following is not true regarding replicative transposition?

Plasmids that can move transposons from one bacterial cell to another are known as

Which enzyme catalyzes the excision and insertion events conducted by transposons?

In your search for mutants of "your favorite gene" (yfg)you identify a mutant which you believe to be a transposon insertion.At your disposal you have a point mutant of yfg.How can you distinguish this potential yfg transposon disruption from a non-transposon mutation?

Which transposable element found in bacteria is the simplest,containing only genes involved in transposition?

Short identical sequences at the ends of an IS sequence are known as

Mutations generated by transposons can be located from a large,heterogeneous mixture of DNA by the known sequence of the transposon.What is this called?

Which of the following is true regarding the Ds element in maize? 1)Ds elements are structurally heterogeneous 2)Some Ds elements appear to have been derived from Ac elements by the loss of internal sequences 3)They all possess the same inverted terminal repeats as Ac elements

Which part of the conjugative R plasmid contains the genes for antibiotic resistance?

Replicative transposition can occur in which of the following organisms?

What is formed when two IS elements insert near each other?

Ds elements are characterized by a peculiar piggybacking arrangement in which one Ds element is inserted into another,but in an inverted orientation.These are known as

How are Tn3 elements classified?

The Science Of Genetics

Cellular Reproduction

Mendelism The Basic Principles Of Inheritance

Extensions Of Mendelism

The Chromosomal Basis Of Mendelism

Variation In Chromosome Number And Structure

Linkage,Crossing Over,And Chromosome Mapping In …

The Genetics Of Bacteria And Their Viruses

DNA And The Molecular Structure Of Chromosomes

Replication Of DNA And Chromosomes

Transcription And RNA Processing

Translation And The Genetic Code

Mutation,DNA Repair,And Recombination

The Techniques Of Molecular Genetics

Genomics

Applications Of Molecular Genetics

Regulation Of Gene Expression In Prokaryotes

Regulation Of Gene Expression In Eukaryotes

The Genetic Control Of Animal Development

The Genetic Basis Of Cancer

Inheritance Of Complex Traits

Population Genetics

Evolutionary Genetics

Filters

Exam 17: Transposable Genetics Elements

Which of the following elements exhibit homogeneous A:T sequences at one end?

Would you expect genes encoded by retrotransposons to contain introns? Why?

Eukaryotic DNA sequences that can move from one position to another are known as

Which of the following is not true regarding replicative transposition?

Plasmids that can move transposons from one bacterial cell to another are known as

Which enzyme catalyzes the excision and insertion events conducted by transposons?

In your search for mutants of "your favorite gene" (yfg)you identify a mutant which you believe to be a transposon insertion.At your disposal you have a point mutant of yfg.How can you distinguish this potential yfg transposon disruption from a non-transposon mutation?

Which transposable element found in bacteria is the simplest,containing only genes involved in transposition?

Short identical sequences at the ends of an IS sequence are known as

Mutations generated by transposons can be located from a large,heterogeneous mixture of DNA by the known sequence of the transposon.What is this called?

Which of the following is true regarding the Ds element in maize? 1)Ds elements are structurally heterogeneous 2)Some Ds elements appear to have been derived from Ac elements by the loss of internal sequences 3)They all possess the same inverted terminal repeats as Ac elements

Which part of the conjugative R plasmid contains the genes for antibiotic resistance?

Replicative transposition can occur in which of the following organisms?

What is formed when two IS elements insert near each other?

Ds elements are characterized by a peculiar piggybacking arrangement in which one Ds element is inserted into another,but in an inverted orientation.These are known as

How are Tn3 elements classified?

The Science Of Genetics

Cellular Reproduction

Mendelism The Basic Principles Of Inheritance

Extensions Of Mendelism

The Chromosomal Basis Of Mendelism

Variation In Chromosome Number And Structure

Linkage,Crossing Over,And Chromosome Mapping In …

The Genetics Of Bacteria And Their Viruses

DNA And The Molecular Structure Of Chromosomes

Replication Of DNA And Chromosomes

Transcription And RNA Processing

Translation And The Genetic Code

Mutation,DNA Repair,And Recombination

The Techniques Of Molecular Genetics

Genomics

Applications Of Molecular Genetics

Regulation Of Gene Expression In Prokaryotes

Regulation Of Gene Expression In Eukaryotes

The Genetic Control Of Animal Development

The Genetic Basis Of Cancer

Inheritance Of Complex Traits

Population Genetics

Evolutionary Genetics

Filters