Question 1

What are the roles of the recBCD genes?

Accepted Answer

They function in bacterial recombination.

Question 2

Compare and contrast bacteriophage lysis and lysogeny.

Accepted Answer

Both lysis and lysogeny involve bacterial/phage interactions related to the production of phage progeny.Lysis occurs when progeny phage burst from the bacterial cell; lysogeny involves the incorporation of the phage chromosome into the bacterial chromosome.

Question 3

Name the general category into which double-stranded circular extrachromosomal DNA elements such as F factors,ColE1,and R would fall.

Accepted Answer

A)  capsid 
B)  r-determinant 
C)  plaque 
D)  partial diploid 
E)  plasmid 
A)  capsid 
B)  r-determinant 
C)  plaque 
D)  partial diploid 
E)  plasmid E

Question 4

What is meant by the term cotransformation?

Accepted Answer

Cotransformation occ

Question 5

What is a significant difference between a lytic and a lysogenic cycle?

Accepted Answer

In a lytic cycle,the phage gen

Question 6

Distinguish between F⁺ and F⁻ bacteria.

Accepted Answer

F+ bacteria contain an F facto

Question 7

Describe how different strains of E.coli can reveal different linkage arrangements of genes in Hfr crosses.

Accepted Answer

Different strains may have dif

Question 8

R plasmids often contain genes for antibody production.

Accepted Answer

A) True 
 B)False

Question 9

The clearing made by bacteriophages in a "lawn" of bacteria on an agar plate is called a ________.

Accepted Answer

A)  clear zone 
B)  lysogenic zone 
C)  prophage 
D)  plaque 
E)  host range 
A)  clear zone 
B)  lysogenic zone 
C)  prophage 
D)  plaque 
E)  host range

Question 10

A form of bacterial recombination that involves a viral intermediate is called ________.

Accepted Answer

The answer of A form of bacterial recombination that involves...

Question 11

What experimental observation demonstrated that genes are involved in the integration of foreign DNA into the bacterial chromosome?

Accepted Answer

Mutations allowed identificati

Question 12

Lysogeny is a process that occurs during transformation and conjugation.

Accepted Answer

A) True 
 B)False

Question 13

To produce recombinants in bacteria,one crossover is better than two.

Accepted Answer

A) True 
 B)False

Question 14

Explain the composition and use of minimal medium in the study of bacterial genetics.

Accepted Answer

Minimal medium consists of an organic ca

Question 15

Temperate phages are those that can enter either the ________ or ________ cycle.

Accepted Answer

A)  lytic; lysogenic 
B)  virulent; avirulent 
C)  functional; nonfunctional 
D)  former; nonformer 
E)  complementing; competing 
A)  lytic; lysogenic 
B)  virulent; avirulent 
C)  functional; nonfunctional 
D)  former; nonformer 
E)  complementing; competing

Question 16

The "interrupted mating technique" provides a genetic map in Drosophila.

Accepted Answer

A) True 
 B)False

Question 17

Lysogeny is an important phenomenon in bacteria and phages.Briefly describe lysogeny (using labeled diagrams if helpful).

Accepted Answer

Lysogeny is the process in whi

Question 18

Assume that one counted 67 plaques on a bacterial plate where 0.1 ml of a 10⁻⁵ dilution of phage was added to bacterial culture.What is the initial concentration of the undiluted phage?

Accepted Answer

67 × 10⁵ × 10 = 6.7

Question 19

Name three forms of recombination in bacteria.

Accepted Answer

conjugatio

Question 20

Name the term used to describe the phenomenon in which a bacteriophage genome incorporates its genome into the chromosome of the host.

Accepted Answer

The answer of Name the term used to describe the...

Exam 6: Genetic Analysis and Mapping in Bacteria and Bacteriophages

What are the roles of the recBCD genes?

Compare and contrast bacteriophage lysis and lysogeny.

Name the general category into which double-stranded circular extrachromosomal DNA elements such as F factors,ColE1,and R would fall.

What is meant by the term cotransformation?

What is a significant difference between a lytic and a lysogenic cycle?

Distinguish between F⁺ and F⁻ bacteria.

Describe how different strains of E.coli can reveal different linkage arrangements of genes in Hfr crosses.

R plasmids often contain genes for antibody production.

The clearing made by bacteriophages in a "lawn" of bacteria on an agar plate is called a ________.

A form of bacterial recombination that involves a viral intermediate is called ________.

What experimental observation demonstrated that genes are involved in the integration of foreign DNA into the bacterial chromosome?

Lysogeny is a process that occurs during transformation and conjugation.

To produce recombinants in bacteria,one crossover is better than two.

Explain the composition and use of minimal medium in the study of bacterial genetics.

Temperate phages are those that can enter either the ________ or ________ cycle.

The "interrupted mating technique" provides a genetic map in Drosophila.

Lysogeny is an important phenomenon in bacteria and phages.Briefly describe lysogeny (using labeled diagrams if helpful).

Assume that one counted 67 plaques on a bacterial plate where 0.1 ml of a 10⁻⁵ dilution of phage was added to bacterial culture.What is the initial concentration of the undiluted phage?

Name three forms of recombination in bacteria.

Name the term used to describe the phenomenon in which a bacteriophage genome incorporates its genome into the chromosome of the host.

Introduction to Genetics

Mitosis and Meiosis

Mendelian Genetics

Extensions of Mendelian Genetics

Chromosome Mapping in Eukaryotes

Sex Determination and Sex Chromosomes

Chromosome Mutations: Variation in Number and Arrangement

Extranuclear Inheritance

DNA Structure and Analysis

DNA Replication and Recombination

DNA Organization in Chromosomes

The Genetic Code and Transcription

Translation and Proteins

Gene Mutation,dna Repair,and Transposition

Regulation of Gene Expression in Prokaryotes

Regulation of Gene Expression in Eukaryotes

Developmental Genetics

Cancer and Regulation of the Cell Cycle

Recombinant DNA Technology

Genomics, bioinformatics, and Proteomics

Applications and Ethics of Genetic Engineering and Biotechnology

Quantitative Genetics and Multifactorial Traits

Neurogenetics

Population and Evolutionary Genetics

Filters

Temperate phages are those that can enter either the or cycle.