NEET · Biology · STD 12 - 5. molecular basis of inheritance

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

Verified Solution

Answer & Solution

Correct Answer

(C) Hershey and Chase

Step-by-step Solution

Detailed explanation

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Explore more questions on app

From NEET

The unit of thermal conductivity is

NEET 2019 Easy

Match List I with List II:

\(\text{List - I (Ion)}\)	\(\text{List - II (Group Number}\) \(\text{in Cation Analysis)}\)
A. \(\text{Co} ^{2+}\)	(I) \(\text{Group - I}\)
B. \(\text{Mg} ^{2+}\)	(II) \(\text{Group - III}\)
C. \(\text{Pb} ^{2+}\)	(III) \(\text{Group - IV}\)
D. \(\text{Al} ^{3+}\)	(IV) \(\text{Group - VI}\)

NEET 2025 Medium

Match the metal ions given in Column\(- I\) with the spin magnetic moments of the ions given in Column\(-II\) and assign the correct code

Column\(-I\)	Column\(-II\)
\((a)\;Co^{+3}\)	\((i)\;\sqrt{8}\; B.M.\)
\((b)\;Cr^{+3}\)	\((ii)\;\sqrt{35}\; B.M.\)
\((c)\;Fe^{+3}\)	\((iii)\;\sqrt{3}\; B.M.\)
\((d)\;Ni^{+2}\)	\((iv)\;\sqrt{24}\; B.M.\)
	\((v)\;\sqrt{15}\; B.M.\)

\((a)\quad (b)\quad (c)\quad (d)\)

NEET 2018 Medium

Match the following cell structure with its characteristic feature

(a) Tight junctions	(i) Cement neighbouring cells together to form sheet
(b) Adhering Junctions	(ii) Transmit information through chemical to another cells
(c) Gap junctions	(iii) Establish a barrier to prevent leakage of fluid across epithelial cells
(d) Synaptic junctions	(iv) Cytoplasmic channels to facilitate communication between adjacent cells

Select correct option from the following

NEET 2019 Medium

Explore more questions on app