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5.Molecular Basis of Inheritance
normal
During infection of $\mathrm{E}$. coli cells by bacteriophage $T2$,
A
proteins are the only phage components that actually enter the infected cell.
B
both proteins and nucleic acids enter the cell.
C
only proteins from the infecting phage can also be detected in progeny phage.
D
only nucleic acids enter the cell.
Solution
The experiment conducted by Hershey and Chase proved that $DNA$ is the genetic material and that during infection of $E$. coli cells by bacteriophage T2, only nucleic acids ($DNA$ or $RNA$) enter the cell. Nucleic acids from the head pass through the hollow tail and enter the bacterial cell. The remainder of the phage remains on the outside of the bacterium as "ghost".
Standard 12
Biology
