Thymine makes up 28% of the nucleotides in a sample of dna from an organism. approximately what percentage of the nucleotides in this sample will be guanine?

Question

Biology

Donaldson

19 April, 23:32

Thymine makes up 28% of the nucleotides in a sample of dna from an organism. approximately what percentage of the nucleotides in this sample will be guanine?

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Niko Owen · Answer 1

In DNA, the bases present undergo complementary pairing. The base pairs are as follows:

Adenine - Thymine

Cytosine - Guanine

So if the DNA sample has 28% Thymine, the amount of Adenine will be equal which will be 28%.

The remaining bases will occupy:

100 - 28 * 2 = 44%

Because Cytosine and Guanine will be in equal quantities,

Guanine = 44/2 = 22%