Question 1

What is the purpose of Okazaki fragments?

Accepted Answer

A)  To assist in the formation of the replication fork 
B)  To allow DNA to be synthesized in the 5' to 3' direction on the leading strand 
C)  To allow DNA to be synthesized in the 5′ to 3′ direction on the lagging strand 
D)  To reform the double helix following replication 
A)  To assist in the formation of the replication fork 
B)  To allow DNA to be synthesized in the 5' to 3' direction on the leading strand 
C)  To allow DNA to be synthesized in the 5′ to 3′ direction on the lagging strand 
D)  To reform the double helix following replication

Question 2

You have isolated what appears to be alien DNA.While studying its replication,you performed the exact experiment Meselson and Stahl did.After three generations,the DNA is subjected to a CsCl gradient and only one band appears.What type of replication does this DNA undergo?

Accepted Answer

A)  semiconservative 
B)  conservative 
C)  dispersive 
A)  semiconservative 
B)  conservative 
C)  dispersive

Question 3

How many origins of replication does a bacterial chromosome contain?

Accepted Answer

A)  0 
B)  1 
C)  10 
D)  Depends on the size of the DNA 
A)  0 
B)  1 
C)  10 
D)  Depends on the size of the DNA

Question 4

Which recombination model involves formation of a D-loop?

Accepted Answer

A)  double-stranded break model 
B)  Holliday model 
C)  single-stranded break model 
A)  double-stranded break model 
B)  Holliday model 
C)  single-stranded break model

Question 5

The origin of replication in bacteria is called oriC.

Accepted Answer

A) True 
 B)False

Question 6

Which describes the mechanism of DNA replication in which the newly made double-stranded DNA contains one parental strand and one daughter strand?

Accepted Answer

A)  dispersive 
B)  semiconservative 
C)  conservative 
A)  dispersive 
B)  semiconservative 
C)  conservative

Question 7

The ability of the DNA polymerase to remove mismatched bases using exonuclease cleavage is called proofreading.

Accepted Answer

A) True 
 B)False

Question 8

DNA polymerase III has the ability to begin synthesis of the new daughter strands immediately following the formation of the replication fork.

Accepted Answer

A) True 
 B)False

Question 9

Select the limitations of the DNA polymerases used for DNA replication.

Accepted Answer

A)  DNA polymerase can attach new nucleotides only in the 5′ to 3′ direction. 
B)  DNA polymerases must begin synthesis using a primer or existing DNA strand. 
C)  DNA polymerases must have a template strand to copy from. 
D)  DNA polymerases can attach new nucleotides in the 3′ to 5′ direction only on the lagging strand. 
A)  DNA polymerase can attach new nucleotides only in the 5′ to 3′ direction. 
B)  DNA polymerases must begin synthesis using a primer or existing DNA strand. 
C)  DNA polymerases must have a template strand to copy from. 
D)  DNA polymerases can attach new nucleotides in the 3′ to 5′ direction only on the lagging strand.

Question 10

In eukaryotes,which of the following is similar to the oriC region of prokaryotes?

Accepted Answer

A)  centromeres 
B)  ARS elements 
C)  promoters 
D)  telomeres 
A)  centromeres 
B)  ARS elements 
C)  promoters 
D)  telomeres

What is the purpose of Okazaki fragments?

You have isolated what appears to be alien DNA.While studying its replication,you performed the exact experiment Meselson and Stahl did.After three generations,the DNA is subjected to a CsCl gradient and only one band appears.What type of replication does this DNA undergo?

How many origins of replication does a bacterial chromosome contain?

Which recombination model involves formation of a D-loop?

The origin of replication in bacteria is called oriC.

Which describes the mechanism of DNA replication in which the newly made double-stranded DNA contains one parental strand and one daughter strand?

The ability of the DNA polymerase to remove mismatched bases using exonuclease cleavage is called proofreading.

DNA polymerase III has the ability to begin synthesis of the new daughter strands immediately following the formation of the replication fork.

Select the limitations of the DNA polymerases used for DNA replication.

In eukaryotes,which of the following is similar to the oriC region of prokaryotes?

Overview of Genetics

Reproduction and Chromosome Transmission

Mendelian Inheritance

Sex Determination and Sex Chromosomes

Extensions of Mendelian Inheritance

Extranuclear Inheritance, Imprinting, and Maternal Effect

Genetic Linkage and Mapping in Eukaryotes

Variation in Chromosome Structure and Number

Genetics in Bacteria

Genetics of Viruses

Molecular Structure of DNA and RNA

Molecular Structure of Chromosomes and Transposition

Gene Transcription and RNA Modification

Translation of MRNA

Gene Regulation in Bacteria

Gene Regulation in Eukaryotes

Non-Coding Rnas

Gene Mutation and DNA Repair

Molecular Technologies

Genomics

Medical Genetics and Cancer

Population Genetics

Quantitative Genetics

Filters

Exam 13: Dna Replication and Recombination

What is the purpose of Okazaki fragments?

You have isolated what appears to be alien DNA.While studying its replication,you performed the exact experiment Meselson and Stahl did.After three generations,the DNA is subjected to a CsCl gradient and only one band appears.What type of replication does this DNA undergo?

How many origins of replication does a bacterial chromosome contain?

Which recombination model involves formation of a D-loop?

The origin of replication in bacteria is called oriC.

Which describes the mechanism of DNA replication in which the newly made double-stranded DNA contains one parental strand and one daughter strand?

The ability of the DNA polymerase to remove mismatched bases using exonuclease cleavage is called proofreading.

DNA polymerase III has the ability to begin synthesis of the new daughter strands immediately following the formation of the replication fork.

Select the limitations of the DNA polymerases used for DNA replication.

In eukaryotes,which of the following is similar to the oriC region of prokaryotes?

Overview of Genetics

Reproduction and Chromosome Transmission

Mendelian Inheritance

Sex Determination and Sex Chromosomes

Extensions of Mendelian Inheritance

Extranuclear Inheritance, Imprinting, and Maternal Effect

Genetic Linkage and Mapping in Eukaryotes

Variation in Chromosome Structure and Number

Genetics in Bacteria

Genetics of Viruses

Molecular Structure of DNA and RNA

Molecular Structure of Chromosomes and Transposition

Gene Transcription and RNA Modification

Translation of MRNA

Gene Regulation in Bacteria

Gene Regulation in Eukaryotes

Non-Coding Rnas

Gene Mutation and DNA Repair

Molecular Technologies

Genomics

Medical Genetics and Cancer

Population Genetics

Quantitative Genetics

Filters