Assertion (S): DNA structure contains A-T com | vedclass

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(B) Assertion $(S)$ is true because in $DNA$,Adenine $(A)$ always pairs with Thymine $(T)$ via two hydrogen bonds.Reason $(R)$ is also true because $D

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

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(B) Assertion $(S)$ is true because in $DNA$,Adenine $(A)$ always pairs with Thymine $(T)$ via two hydrogen bonds.Reason $(R)$ is also true because $DNA$ contains Thymine instead of Uracil,which is found in $RNA$.However,the reason why $A$ pairs with $T$ is due to the specific chemical structure and hydrogen bonding capacity of these bases,not simply because $DNA$ lacks uracil. Therefore,$R$ is not the direct explanation for $S$.

Assertion $(S)$: $DNA$ structure contains $A-T$ complementary base pairing.
Reason $(R)$: $DNA$ structure does not contain uracil.

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Assertion $(S)$: $DNA$ structure contains $A-T$ complementary base pairing.Reason $(R)$: $DNA$ structure does not contain uracil.