Question 1

Individuals with SCID,severe combined immunodeficiency disease,have defective ________ genes,which cause loss of B-cell and T-cell function.

Accepted Answer

The answer of Individuals with SCID,severe combined immunodeficiency disease,have defective...

Question 2

The Ds transposable element of maize cannot transpose on its own because it lacks

Accepted Answer

A)  transposase.
B)  inverted repeats.
C)  origin of replication.
D)  antibiotic resistance.
E)  Tn10.F) All of the above
G) C) and E)

Question 3

DNA sequences that resemble normal genes but do not function are called________.

Accepted Answer

The answer of DNA sequences that resemble normal genes but...

Question 4

The recombinases RAG-1 and RAG-2 are expressed in both plasma and memory B-cells.

Accepted Answer

A) True 
 B)False  False

Question 5

Antibiotic resistance in bacteria can be transferred using insertion sequences.

Accepted Answer

A) True 
 B)False

Question 6

The constant region of an antibody contains the antigen binding domains.

Accepted Answer

A) True 
 B)False

Question 7

HERVs,human endogenous retroviruses make up about 10-20% of the human genome.

Accepted Answer

A) True 
 B)False

Question 8

Group II introns are non-LTR retrotransposons that are found only in bacterial cells.

Accepted Answer

A) True 
 B)False

Question 9

5'-ACCGTAG-GATGCCA-3'is an example of an inverted repeat sequence.

Accepted Answer

A) True 
 B)False

Question 10

_______________ is an enzyme that can synthesize DNA from an RNA template.

Accepted Answer

Reverse transcriptase

Question 11

The loss of bases or gain of bases is common in immunoglobulin gene rearrangement.

Accepted Answer

A) True 
 B)False

Question 12

__________ receptor genes undergo rearrangement in a manor similar to B-cell immunoglobulin genes.

Accepted Answer

The answer of __________ receptor genes undergo rearrangement in a...

Question 13

Insertion sequences are transposable elements that can inactivate genes.

Accepted Answer

A) True 
 B)False

Question 14

In ____________transposition both strands of the original DNA move together whereas in _________ transposition one copy of the DNA moves to a new site while one copy stays in the genome.

Accepted Answer

nonreplica...

Question 15

Transposable elements or _________ are DNA fragments that can move from one organism to another.

Accepted Answer

The answer of Transposable elements or _________ are DNA fragments...

Question 16

Hybrid dysgenesis may lead to the formation of new species.

Accepted Answer

A) True 
 B)False  True

Question 17

Which of the following is not necessary for retroviral insertion into the host genome?

Accepted Answer

A)  RNA polymerase II
B)  retroviral pol gene
C)  viral protease
D)  RNase H
E)  reverse transcriptaseF) A) and B)
G) B) and D)

Question 18

Which of the following is not true concerning immunoglobulin gene recombination signal sequences?

Accepted Answer

A)  There is a conserved heptamer.
B)  There is a conserved nonamer.
C)  The conserved sequences are separated by a nonconserved sequence of either a 12 bp or a 23 bp sequence.
D)  Recombination occurs between a 12 bp signal and a 23 bp signal.
E)  Recombination only occurs between two heptamers.F) C) and E)
G) None of the above

Question 19

Which of the following transposons does not contain LTRs or inverted repeats at its ends?

Accepted Answer

A)  Ty
B)  Alu elements
C)  copia
D)  Tn3
E)  DsF) A) and C)
G) B) and E)

Question 20

In order for P element transfer to happen in Drosophila which of the following situations must occur?

Accepted Answer

A)  a P crossed with a P female
B)  a P male crossed with an M female
C)  an M male crosses with a P female
D)  an M male crossed with an M female
E)  any male crossed with a P femaleF) C) and D)
G) B) and D)

Exam 23: Transposition

Individuals with SCID,severe combined immunodeficiency disease,have defective ________ genes,which cause loss of B-cell and T-cell function.

Correct AnswerverifiedShow Answer

The Ds transposable element of maize cannot transpose on its own because it lacks

Correct AnswerverifiedShow Answer

DNA sequences that resemble normal genes but do not function are called________.

Correct AnswerverifiedShow Answer

The recombinases RAG-1 and RAG-2 are expressed in both plasma and memory B-cells.

Correct AnswerverifiedFalse

Antibiotic resistance in bacteria can be transferred using insertion sequences.

Correct AnswerverifiedShow Answer

The constant region of an antibody contains the antigen binding domains.

Correct AnswerverifiedShow Answer

HERVs,human endogenous retroviruses make up about 10-20% of the human genome.

Correct AnswerverifiedShow Answer

Group II introns are non-LTR retrotransposons that are found only in bacterial cells.

Correct AnswerverifiedShow Answer

5'-ACCGTAG-GATGCCA-3'is an example of an inverted repeat sequence.

Correct AnswerverifiedShow Answer

_______________ is an enzyme that can synthesize DNA from an RNA template.

Correct AnswerverifiedReverse transcriptase

The loss of bases or gain of bases is common in immunoglobulin gene rearrangement.

Correct AnswerverifiedShow Answer

__________ receptor genes undergo rearrangement in a manor similar to B-cell immunoglobulin genes.

Correct AnswerverifiedShow Answer

Insertion sequences are transposable elements that can inactivate genes.

Correct AnswerverifiedShow Answer

In ____________transposition both strands of the original DNA move together whereas in _________ transposition one copy of the DNA moves to a new site while one copy stays in the genome.

Correct Answerverifiednonreplica...View AnswerShow Answer

Transposable elements or _________ are DNA fragments that can move from one organism to another.

Correct AnswerverifiedShow Answer

Hybrid dysgenesis may lead to the formation of new species.

Correct AnswerverifiedTrue

Which of the following is not necessary for retroviral insertion into the host genome?

Correct AnswerverifiedShow Answer

Which of the following is not true concerning immunoglobulin gene recombination signal sequences?

Correct AnswerverifiedShow Answer

Which of the following transposons does not contain LTRs or inverted repeats at its ends?

Correct AnswerverifiedShow Answer

In order for P element transfer to happen in Drosophila which of the following situations must occur?

Correct AnswerverifiedShow Answer

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False

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Reverse transcriptase

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In ____transposition both strands of the original DNA move together whereas in _ transposition one copy of the DNA moves to a new site while one copy stays in the genome.

Correct Answer
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nonreplica...
View Answer

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True

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