Biology

DNA as Genetic Material

Biology·Prelims Questions

Experiments Proving DNA as Genetic Material — Prelims Questions

NEET UG
Version 1Updated 21 Mar 2026
Q1medium

Which of the following enzymes would abolish the transforming ability of heat-killed S-strain bacteria in Avery, MacLeod, and McCarty's experiment?

Q2medium

In the Hershey-Chase experiment, if 35S^{35}\text{S} was found predominantly in the bacterial pellet after centrifugation, what would have been the conclusion regarding genetic material?

Q3easy

Which of the following properties of genetic material was *not* directly demonstrated by Griffith's experiment?

Q4hard

A student performs a variation of the Hershey-Chase experiment. They label bacteriophages with a radioactive isotope that is present in both DNA and protein. Which of the following isotopes would be unsuitable for this experiment?

Q5easy

In Griffith's experiment, when a mixture of heat-killed S-strain and live R-strain bacteria was injected into mice, the mice died. What was the most significant observation from the dead mice?

Q6medium

Which of the following is a key property of genetic material that was implicitly supported by the results of the Hershey-Chase experiment?

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