J Watson and F Crick proposed the double helix model of DNA…

Biology Molecular Basis of Inheritance Statement Based Questions Single Correct MCQ

Published on: August 26, 2026

J Watson and F Crick proposed the double helix model of DNA. Choose the correct statements with respect to their model of DNA.

I. Based on X-ray diffraction ofDNAproduced by M Wilkins andRFranklin.

II. One of the hall marks of their proposition was base pairing between the two strands of polynucleotide chains.

III. The two polynucleotide chains are antiparallel to each other .

IV. Based on Chargaff’s rule(A +G / T +C =1)

Choose the correct option.

I, II and III

II, III and IV

I, II, III and IV

All of the above

Text Solution

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The correct answer is:

(d)

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