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in Biomolecules by (50.3k points)
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A DNA segment has a total of 1000 nucleotides, out of which 240 are adenine containing nucleotides. How many pyrimidine bases this DNA segment possess?

1 Answer

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Best answer

Pyrimidine = 500. 

According to Chargaff’s rule,

A = T, 

A = 240, hence 

T = 240. A + T = 240 + 240 = 480. 

So, G + C = 1000 – 480 = 520.

G = C, Therefore, C = 520/2 = 260.

Thus, pyrimidine = C + T = 260 + 240 = 500.

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