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5.Molecular Basis of Inheritance
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If the sequence of the coding strand in a transcription unit is written as follows:
$5'-ATGCATGCATGCATGCATGCATGCATGC-3'$. Write down the sequence of $mRNA$.
Option A
Option B
Option C
Option D
Solution
If the coding strand in a transcription unit is
$5^{\prime}-$ $ATGCATGCATGCATGCATGCATGCATGC-3'$
Then, the template strand in $3 '$ to $5 '$ direction would be
$3^{\prime}-$ $TACGTACGTACGTACGTACGTACGTACG-5'$
It is known that the sequence of $mRNA$ is same as the coding strand of $DNA$.
However, in $RNA$, thymine is replaced by uracil.
Hence, the sequence of $mRNA$ will be
$5^{\prime}-$$ AUGCAUGCAUGCAUGCAUGCAUGCAUGC-3'$
Standard 12
Biology
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