if the DNA of a virus is labelled with `32_(P)` and the protein of the virus is labelled with `.^(32p)` and the protein of the virus is labelled with `^(35)S`, after transduction which molecule (s) would be present inside the bacterial cells ?

Options

A. `.^(32)P only
B. `.^(35 )S only
C. Both (a) and (b)
D. None of these

Answer

a

Explanation

(a) : Bacteria which were infected with viruses that had radioactive DNA (incorporated with `overset(32)P`) were radioactive, indicating that DNA was the material that passed from the virus to the bacteria. Bacteria that were infected with viruses that had radioactive proteins (incorporated with`overset(35)S`) were not radioactive. DNA is therefore, the genetic material that is passesd from virus to bacteria.