Question

Choose the correct answer from the alternatives given :
In the DNA double helix fact that a purine base always paired through hydrogen bonds with a pyrimidine base leads to

• A. the antiparallel nature
• B. the semi-conservative nature
• C. uniform width throughout DNA
• D. uniform length in all DNA

Answer 1

The correct option is C uniform width throughout DNA

Purine always pairs with pyrimidine as it provides stability to the DNA strand because the size of the both differs so the arrangement is in such a way that the larger base forms bond with a smaller base and this makes DNA 2nm thick and this is the complementary rule that provides a uniform width to DNA throughout the length.

So the correct option is 'uniform width throughout DNA'.