In a given species,which of the following rat | vedclass

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(A) According to Chargaff's rules for double-stranded $DNA$,the amount of adenine $(A)$ is equal to the amount of thymine $(T)$,and the amount of guan

Vedclass · Accepted Answer

$\frac{A+G}{C+T}$

Vedclass · Answer

(A) According to Chargaff's rules for double-stranded $DNA$,the amount of adenine $(A)$ is equal to the amount of thymine $(T)$,and the amount of guanine $(G)$ is equal to the amount of cytosine $(C)$.Therefore,$A = T$ and $G = C$.This implies that $A + G = T + C$.When we take the ratio of purines $(A+G)$ to pyrimidines $(C+T)$,we get $\frac{A+G}{C+T} = 1$.Since $A+G$ is always equal to $C+T$,this ratio remains constant for a given species.

In a given species,which of the following ratios is constant?

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