Q. What are bacteriocins?

View solution

Q. The first demonstration of recombination in bacteria was achieved by _______________

View solution

Q. Mating between species is necessary for recombination to take place.

View solution

Q. Which type of E.coli strain was chosen to prove the experiment of conjugation?

View solution

Q. In conjugation only small fragments of the bacterial chromosome are transferred.

View solution

Q. What is the shape of DNA in the male cells of E.coli?

View solution

Q. Which of the following cells of E.coli are referred to as F—?

View solution

Q. What is the frequency of formation of recombinants in a F+ X F— cross?

View solution

Q. The F factor DNA is sufficient to specify how many genes?

View solution

Q. Which of the following is true for an Hfr X F— cross?

View solution

Q. Which of the following can be used as a measure to construct a linkage map of the Hfr chromosome?

View solution

Q. The Hfr chromosome is transferred to the F— cell in a _____________ fashion.

View solution

Q. How much time is required to inject a copy of the whole Hfr E.coli genome?

View solution

Q. How much time is taken by the new DNA to make whole phage particles?

View solution

Q. When viral genome can become integrated into the bacterial genome they are known as ____________

View solution

Q. Bacteriophages inject their nucleic acid into the bacterium.

View solution

Q. Which of the following role is performed by a bacteriophage in transduction?

View solution

Q. The viral DNA may be incorporated into the phage head during phage assembly.

View solution

Q. What is the frequency of defective phage particles in progeny phage produced?

View solution

Q. Fragments transferred by a bacteriophage contains how many genes?

View solution