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Q.

Hershey and Chase used 35S and 32P to prove that DNA is the genetic material. Their experiments proved that DNA is genetic material because

(a) progeny viruses retained 32P, but not 35S

(b) retention of 32P in progeny viruses indicated that DNA was passed on

(c) loss of 35S in progeny viruses indicated that proteins were not passed on

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a

a and c only

b

a only

c

a, b and c

d

b and c only

answer is D.

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Detailed Solution

Hershey and Chase used 35S and 32P to prove that DNA is the genetic material. Their experiments proved that DNA is genetic material because progeny viruses retained 32P, but not 35S, retention of 32P in progeny viruses indicated that DNA was passed on and loss of 35S in progeny viruses indicated that proteins were not passed on.

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