The T_4 bacteriophage rII mutant strain fails | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) This experiment is based on the complementation test performed by Seymour Benzer. $1$. The $rII$ mutants of $T_4$ bacteriophage are unable to grow

Vedclass · Accepted Answer

Both strains have different cistrons.

Vedclass · Answer

(D) This experiment is based on the complementation test performed by Seymour Benzer. $1$. The $rII$ mutants of $T_4$ bacteriophage are unable to grow on $E. coli$ strain $K$. $2$. When two different $rII$ mutants are introduced into the same $E. coli$ cell,they can complement each other if the mutations are in different functional units (cistrons). $3$. If the mutations are in different cistrons,the functional protein missing in one mutant is provided by the other,allowing the phage to replicate and lyse the host cell. $4$. Therefore,the lysis occurs because the two strains have mutations in different cistrons,which complement each other to restore the wild-type function.

The $T_4$ bacteriophage $rII$ mutant strain fails to lyse $E. coli$. However,when two strains $rII^X$ and $rII^Y$ are mixed,they lyse $E. coli$. What is the possible reason for this?

Similar Questions

What is central dogma and describe the packing of $DNA$ helix?

Select the correct statement from the following.

Which of the following is not a correct statement regarding $\text{RNA}$?

Which of the following contains the essential enzymes for protein synthesis?

Explain the role of the following scientists:
$1.$ Avery, MacLeod, and McCarty $(1933-44)$
$2.$ Matthew Meselson and Franklin Stahl $(1958)$

Vedclass Test Series

Exam Paper Generator

Online Exam Module