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  • The fact that a purine base always pairs through hydrogen bonds with a pyrimidine base in the DNA double helix leads to: a. the antiparallel nature b. the semiconservative nature c. uniform width throughout DNA d. uniform length in all DNA

The fact that a purine base always pairs through hydrogen bonds with pyrimidine base in the DNA double helix leads to:

a. the antiparallel nature

b. the semiconservative nature

c. uniform width throughout DNA

d. uniform length in all DNA

Answers (1)

The answer is the option (c) uniform width throughout DNA

Because of the nitrogenous base pairing between the two strands of DNA, they are linked to create the double helix structure.

Purines include guanine and adenine. Their structure consists of two heterocyclic rings joined together. Pyrimidines include cytosine and thymine. Their structure consists of a single heterocyclic ring.

Because a double-ringed structure connects with a single ring, the breadth stays the same when purines pair with pyrimidines. In this case, the hydrogen bond's set bond length keeps DNA's width constant.

Hence, option (c) is the correct option.

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infoexpert21

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