An analysis of a DNA (double stranded) sample yielded 18 % cytosine. What would be the percentage of other bases in this sample?

Question

An analysis of a DNA (double stranded) sample yielded 18 % cytosine. What would be the percentage of other bases in this sample? (A) T-32 %, A-32 %, G-18 % (B)  T-32 %,A-18 %,G-32 %  (C)  T-18 %,A-32 %, G-32 %  (D)  1-40 %, A-22 %, G-20 %

Tardigrade Admin · Accepted Answer

According to Chargaff's rule, in DNA purines and pyrimidines are always in equal proportion (ie, A+G=T+C ) and proportion of adenine is always equals to that of thymine, while proportion of guanine always equals to that of cytosine (;e, A=T and G = C).

Q. An analysis of a DNA (double stranded) sample yielded $18%$ cytosine. What would be the percentage of other bases in this sample?

$T - 32%, A - 32%, G - 18%$

$T - 32%, A - 18%, G - 32%$

$T - 18%, A - 32%, G - 32%$

$1 - 40%, A - 22%, G - 20%$

According to Chargaff's rule, in DNA purines and pyrimidines are always in equal proportion (ie, $A + G = T + C$ ) and proportion of adenine is always equals to that of thymine, while proportion of guanine always equals to that of cytosine (;e, $A = T$ and $G$ $= C)$ .

Q. An analysis of a DNA (double stranded) sample yielded 18% cytosine. What would be the percentage of other bases in this sample?

T−32%,A−32%,G−18%

T−32%,A−18%,G−32%

T−18%,A−32%,G−32%

1−40%,A−22%,G−20%