If the amount of guanine in DNA is 20 %,what | vedclass

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(C) According to $Chargaff's$ rule,the amount of adenine $(A)$ is equal to the amount of thymine $(T)$,and the amount of guanine $(G)$ is equal to the

Vedclass · Accepted Answer

$30$

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(C) According to $Chargaff's$ rule,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 $(C)$.Given that the amount of guanine $(G)$ is $20 \%$,then the amount of cytosine $(C)$ must also be $20 \%$.The total percentage of $G + C$ is $20 \% + 20 \% = 40 \%$.Since the total percentage of all four bases $(A + T + G + C)$ is $100 \%$,the sum of $A + T$ is $100 \% - 40 \% = 60 \%$.Since $A = T$,the amount of thymine $(T)$ is $60 \% / 2 = 30 \%$.

If the amount of guanine in $DNA$ is $20 \%$,what is the amount of thymine (in $\%$)?

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