S - Statement: RNA contains thymine in its st | vedclass

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(D) The nitrogenous bases found in $RNA$ are adenine,guanine,cytosine,and uracil. Thymine is absent in $RNA$ and is replaced by uracil.In contrast,$DN

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$S$ and $R$ are both false.

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(D) The nitrogenous bases found in $RNA$ are adenine,guanine,cytosine,and uracil. Thymine is absent in $RNA$ and is replaced by uracil.In contrast,$DNA$ contains adenine,guanine,cytosine,and thymine. Uracil is absent in $DNA$.Therefore,the statement $S$ is false because $RNA$ does not contain thymine.The reason $R$ is also false because $DNA$ does contain thymine.Thus,both $S$ and $R$ are false.

$S$ - Statement: $RNA$ contains thymine in its structure.
$R$ - Reason: $DNA$ does not contain thymine in its structure.

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$S$ - Statement: $RNA$ contains thymine in its structure.$R$ - Reason: $DNA$ does not contain thymine in its structure.