Which scientist experimentally proved that DNA is the sole genetic material in bacteriophage?

(A)Beadle and Tautum
(B)Messelson and Stahl
(C)Hershey and Chase
(D)Jacob and Monod

The NCERT line that answers it

Verbatim line

The unequivocal proof that DNA is the genetic material came from the experiments of Alfred Hershey and Martha Chase (1952).

Chapter: Molecular Basis of Inheritance
Section: 5.2.1 The Genetic Material is DNA

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states 'The unequivocal proof that DNA is the genetic material came from the experiments of Alfred Hershey and Martha Chase (1952)', which directly matches the MCQ's correct answer and distinguishes it from other options.

We did this for 1,565 questions.

Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

Take the free 5-minute check More from this chapter

Question text is reproduced from the published NEET 2019 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.