1. Tardigrade
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  4. If the DNA of a virus is labelled with 32P and the protein of the virus is labelled with 35S, after transduction which molecule(s) would be present inside the bacterial cells?

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Q. If the $DNA$ of a virus is labelled with $^{32}P$ and the protein of the virus is labelled with $^{35}S$, after transduction which molecule(s) would be present inside the bacterial cells?

Molecular Basis of Inheritance

Solution:

Bacteria which were infected with viruses that had radioactive $DNA$ (incorporated, with $^{32}P$) 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 $^{35}S$) were not radioactive. $DNA$ is therefore, the genetic material that is passed from virus to bacteria.