If a DNA strand has the base sequence 5'-AAAA | vedclass

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(B) During the process of transcription,$DNA$ acts as a template for $m-RNA$ synthesis.According to the base-pairing rules,$Adenine$ $(A)$ in $DNA$ pa

Vedclass · Accepted Answer

$3'-UUUU-5'$

Vedclass · Answer

(B) During the process of transcription,$DNA$ acts as a template for $m-RNA$ synthesis.According to the base-pairing rules,$Adenine$ $(A)$ in $DNA$ pairs with $Uracil$ $(U)$ in $RNA$,and $Thymine$ $(T)$ in $DNA$ pairs with $Adenine$ $(A)$ in $RNA$.The given $DNA$ template strand is $5'-AAAA-3'$.Since the strands are antiparallel,the $m-RNA$ will be synthesized in the $5' \rightarrow 3'$ direction,complementary to the $3' \rightarrow 5'$ template.Therefore,the $m-RNA$ sequence will be $3'-UUUU-5'$ (which is equivalent to $5'-UUUU-3'$ in terms of base composition).Thus,the correct option is $B$.

If a $DNA$ strand has the base sequence $5'-AAAA-3'$,then the base sequence of the complementary $m-RNA$ is:

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