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>>Molecular Basis of Inheritance
>>The DNA
>> $B - DNA which is right - handed double h$

Question

B-DNA which is right-handed double helix contains base pairs per turn of the helix and each turn is _ long.

A

10, 3.4 $\overset{˚}{A}$

B

10, 34 $\overset{˚}{A}$

C

11, 20 $\overset{˚}{A}$

D

11, 34 $\overset{˚}{A}$

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Updated on : 2022-09-05

Solution

Verified by Toppr

Correct option is B)

B-DNA is the most commonly found form of DNA in nature. This form of DNA is very narrow and elongated.
B-DNA contains 10 base pairs per turn and each turn is about 34 Å long.
So, the correct answer is '10, 34 Å'

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The width of B-DNA is and each turn of its helix has nucleotides.

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Read the statements given below.

I. Thiamine and Uracil are pyrimidines found in DNA & RNA respectively.
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