Which of the following is NOT true for the do | vedclass

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Question

(A) According to Chargaff's rules for $DNA$,the amount of adenine $(A)$ is equal to thymine $(T)$,and the amount of cytosine $(C)$ is equal to guanine

Vedclass · Accepted Answer

$A = T, C = G$

Vedclass · Answer

(A) According to Chargaff's rules for $DNA$,the amount of adenine $(A)$ is equal to thymine $(T)$,and the amount of cytosine $(C)$ is equal to guanine $(G)$. Thus,$A = T$ and $C = G$. Option $(a)$ states $A = T, C = A$,which is incorrect because $C$ should equal $G$,not $A$. Option $(b)$ is true because heating $DNA$ causes denaturation,which increases the volume and decreases the density. Option $(c)$ is true because the ratio $(A + T) / (C + G)$ is species-specific and not a universal constant. Since the question asks for what is $NOT$ true,and option $(a)$ contains an incorrect statement,it is the correct choice.

Which of the following is $NOT$ true for the double-helical structure of $DNA$?

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