Question

The width of DNA molecule is

• A. $10\,?$
• B. $20\,?$
• C. $34\,?$
• D. $35\,?$

Answer 1

Answer: (B)

$20\,?$

Answer 2

The width of the DNA molecule is $20\,?$, whereas two strands are in twined around one another and each complete coil measures $3.4\, nm$ ($10$ bases long).