Question 1

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

Accepted Answer

Reverse transcriptase

Question 2

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

Accepted Answer

A) True 
 B)False  False

Question 3

Hybrid dysgenesis may lead to the formation of new species.

Accepted Answer

A) True 
 B)False  True

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

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) Ds 
A) Ty 
B) Alu elements 
C) copia 
D) Tn3 
E) Ds

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

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

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

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 11

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 12

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 female 
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 female

Question 13

Antibiotic resistance in bacteria can be transferred using insertion sequences.

Accepted Answer

A) True 
 B)False

Question 14

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. 
A) transposase. 
B) inverted repeats. 
C) origin of replication. 
D) antibiotic resistance. 
E) Tn10.

Question 15

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. 
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.

Question 16

Insertion sequences are transposable elements that can inactivate genes.

Accepted Answer

A) True 
 B)False

Question 17

__________ 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 18

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 19

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

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

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

Exam 23: Transposition

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

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

Hybrid dysgenesis may lead to the formation of new species.

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

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

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

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

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

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

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.

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

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

Antibiotic resistance in bacteria can be transferred using insertion sequences.

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

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

Insertion sequences are transposable elements that can inactivate genes.

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

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

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

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

A Brief History

The Molecular Nature of Genes

An Introduction to Gene Function

Molecular Cloning Methods

Molecular Tools for Studying Genes and Gene Activity

The Mechanism of Transcription in Bacteria

Operons: Fine Control of Bacterial Transcription

Major Shifts in Bacterial Transcription

Dna-Protein Interactions in Bacteria

Eukaryotic Rna Polymerases and Their Promoters

General Transcription Factors in Eukaryotes

Transcription Activators in Eukaryotes

Chromatin Structure and Its Effect on Transcription

Rna Processing I: Splicing

Rna Processing II: Capping and Polyadenylation

Rna Processing: Other Post-Transcriptional Events

The Mechanism of Translation I: Initiation

The Mechanism of Translation II: Elongation and Termination

Ribosomes and Transfer Rna

Dna Replication,damage and Repair

Dna Replication II: Detailed Mechanism

Homologous Recombination

Introduction to Genomics: Dna Sequencing on a Genomic Scale

Genomics II: Functional Genomics,proteomics and Bioinformatics

Filters

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.