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Q.
In a DNA molecule, the adenine is $15\%$. What will be the percentage of guanine in this DNA?
Delhi UMET/DPMTDelhi UMET/DPMT 2008Molecular Basis of Inheritance
Solution:
According to Chargaffs rule, the total amount of adenine released is equal to the total amount of thymine and the total amount of cytosine is equal to the total amount of guanine, ie, $A = T$ and $C = G$. Thus, if DNA molecule contains $15\%$ adenine then $C$ and $G$ will constitute $70\%$, out of which guanine will be $35\%$.