Question 1

Bacteriophages that cannot undergo lysogeny but can infect bacteria are called ________.

Accepted Answer

The answer of Bacteriophages that cannot undergo lysogeny but can...

Question 2

What are the roles of the recBCD genes?

Accepted Answer

The answer of What are the roles of the recBCD...

Question 3

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

Accepted Answer

The answer of Lysogeny is an important phenomenon in bacteria...

Question 4

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

The answer of Assume that one counted 67 plaques on...

Question 5

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

Accepted Answer

The answer of What experimental observation demonstrated that genes are...

Question 6

In a bacterial cross in which the donor (Hfr) is a⁺b⁺ and the recipient strain (F^-) is a^-b^-, it is expected that recombinant bacteria will all be a⁺b⁺^.

Accepted Answer

Recombinant bacteria may acquire some, but not necessarily all, of the donor's genes due to the random nature of gene transfer during bacterial conjugation.

Question 7

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 8

Name three forms of recombination in bacteria.

Accepted Answer

The answer of Name three forms of recombination in bacteria....

Question 9

Bacteria that are in a particular physiological state to become transformed are called ________.

Accepted Answer

The answer of Bacteria that are in a particular physiological...

Question 10

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

Accepted Answer

The answer of What is a significant difference between a...

Question 11

What is a bacteriophage?

Accepted Answer

The answer of What is a bacteriophage?...

Question 12

What is the consequence of a mutation in the recA gene in bacteria?

Accepted Answer

The answer of What is the consequence of a mutation...

Question 13

What is meant by the term cotransformation?

Accepted Answer

The answer of What is meant by the term cotransformation?...

Question 14

Present the general structural features of a plasmid and give an example.

Accepted Answer

The answer of Present the general structural features of a...

Question 15

If two different auxotrophic strains are placed in a liquid medium culture tube, prototrophic strains can sometimes be subsequently recovered. Name several mechanisms by which this is possible.

Accepted Answer

The answer of If two different auxotrophic strains are placed...

Question 16

Explain what is meant by the term heteroduplex in the context of bacterial transformation.

Accepted Answer

The answer of Explain what is meant by the term...

Question 17

When a bacteriophage genome incorporates itself into the chromosome of the host, that phage genome is referred to as a(n) ________.

Accepted Answer

The answer of When a bacteriophage genome incorporates itself into...

Question 18

Compare and contrast bacteriophage lysis and lysogeny.

Accepted Answer

The answer of Compare and contrast bacteriophage lysis and lysogeny....

Question 19

What is a merozygote?

Accepted Answer

The answer of What is a merozygote?...

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...

Quiz 6: Genetic Analysis and Mapping in Bacteria and Bacteriophages