Which one of the following ratios is constant | vedclass

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(B) According to Chargaff's rules,in a double-stranded $DNA$ molecule,the amount of Adenine $(A)$ equals the amount of Thymine $(T)$,and the amount of

Vedclass · Accepted Answer

$A + G / T + C$

Vedclass · Answer

(B) According to Chargaff's rules,in a double-stranded $DNA$ molecule,the amount of Adenine $(A)$ equals the amount of Thymine $(T)$,and the amount of Guanine $(G)$ equals the amount of Cytosine $(C)$.Therefore,$A = T$ and $G = C$.This implies that the ratio $(A + G) / (T + C)$ is equal to $1$,because $(A + G) = (T + C)$.This ratio is constant for all species,although the base composition $(A + T) / (G + C)$ varies significantly between different species.

Which one of the following ratios is constant in $DNAs$ of different species?

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