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The pitch of the DNA helix and the distance between adjacent base pairs in a helix is approximately
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a
20nm and 2 nm respectively
b
2 nm and 20 nm respectively
c
0.34 nm and 3.4 nm respectively
d
3.4 nm and 0.34 nm respectively
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Correct option is D
The two chains are coiled in a right-handed fashion. The pitch of the helix is 3.4 nm and there are roughly 10 bp in each turn. Consequently, the distance between adjacent base pairs in a helix is approximately 0.34 nm.Similar Questions
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