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

Match List I with List II:
List - I List - II
(a) Alfred Hershey and Martha Chase (i) Streptococcus pneumoniae
(b) Euchromatin (ii) Densely packed and dark-stained
(c) Frederick Griffith (iii) Loosely packed and light-stained
(d) Heterochromatin (iv) DNA as genetic material confirmation
Choose the correct answer from the options given below:

A A-II, B-IV, C-I, D-III
B A-IV, B-II, C-I, D-III
C A-IV, B-III, C-I, D-II
D A-III, B-II, C-IV, D-I

Verified Solution

Answer & Solution

Correct Answer

(C) A-IV, B-III, C-I, D-II

Step-by-step Solution

Detailed explanation

The unequivocal proof that DNA is the genetic material came from the experiment of Alfred Hershey and Martha Chase.

Euchromatin are lightly stained region with loosely packed chromatin fibre.
Frederick Griffith performed series of experiments by selecting the different strains of Streptococcus pneumoniae.

Heterochromatin are darkly stained region with tightly packed chromatin fibre.

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.

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List - I	List - II
(a) Alfred Hershey and Martha Chase	(i) Streptococcus pneumoniae
(b) Euchromatin	(ii) Densely packed and dark-stained
(c) Frederick Griffith	(iii) Loosely packed and light-stained
(d) Heterochromatin	(iv) DNA as genetic material confirmation