One turn of the helix in a Bform $DNA$ is approximately
One turn of the helix in a Bform $DNA$ is approximately
- [AIPMT 2006]
- A
$2\ nm$
- B
$20\ nm$
- C
$0.34\ nm$
- D
$3.4\ nm.$
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- [NEET 2020]
Watson and Crick are known for their discovery that $DNA$
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