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Q.

Wilkins X-ray diffraction showed the diameter of the DNA helix as

[A] 10A
[B] 20A
[C] 30A
[D] 40A
Answer & Explanation
Option: [B]

NCERT Class 12 Biology Solved Multiple Choice Questions

1000 BIOLOGY MCQS AND ANSWERS – IMPORTANT FOR SSC RAILWAY PSC EXAMS

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