In a DNA sample the proportion of ${A}$ is $17 \%$, the amount of ${G}+{T}$ and ${C}$ will be respectively.

NEET UG BIOLOGY MCQ: MOLECULAR BASIS OF INHERITANCE

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In a DNA sample the proportion of

{A}

17 \%

, the amount of

{G}+{T}

and

{C}

will be respectively.

View answer and explanation

Correct option: A

50 \%

and

33 \%

Option C (66% and 33%) is correct because according to Chargaff's rules, A=T and G=C. If A is 17%, then T is also 17%. Therefore, A+T = 34%, and G+C = 100% - 34% = 66%. Since G=C, then G=C=33%. Thus the amounts of G+T and C are 50% and 33% respectively.

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