Assertion (S): RNA does not contain T (Thymin | vedclass

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(B) $1$. $RNA$ (Ribonucleic acid) contains the nitrogenous bases Adenine $(A)$,Guanine $(G)$,Cytosine $(C)$,and Uracil $(U)$. It does not contain Thym

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$S$ and $R$ are both true,but $R$ is not the correct explanation of $S$.

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(B) $1$. $RNA$ (Ribonucleic acid) contains the nitrogenous bases Adenine $(A)$,Guanine $(G)$,Cytosine $(C)$,and Uracil $(U)$. It does not contain Thymine $(T)$. Thus,Assertion $(S)$ is true.$2$. $DNA$ (Deoxyribonucleic acid) contains the nitrogenous bases Adenine $(A)$,Guanine $(G)$,Cytosine $(C)$,and Thymine $(T)$. It does not contain Uracil $(U)$. Thus,Reason $(R)$ is true.$3$. While both statements are scientifically accurate,the reason $(R)$ explains the composition of $DNA$,whereas the assertion $(S)$ describes the composition of $RNA$. Therefore,$R$ is not the direct explanation for $S$.

Assertion $(S)$: $RNA$ does not contain $T$ (Thymine).
Reason $(R)$: $DNA$ does not contain $U$ (Uracil).

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Assertion : In a $DNA$ molecule,$A-T$ rich parts melt before $G-C$ rich parts.
Reason : In between $A$ and $T$ there are three $H-$ bonds,whereas in between $G$ and $C$ there are two $H-$ bonds.

Franklin and Wilkins showed that $DNA$:

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Assertion $(S)$: $RNA$ does not contain $T$ (Thymine).Reason $(R)$: $DNA$ does not contain $U$ (Uracil).