alleryIf the coding strand of a transcription unit reads 5'-ATGCATGCATGC-3', the mRNA transcribed will be:
A5'-AUGCAUGCAUGC-3'
B5'-UACGUACGUACG-3'
C3'-AUGCAUGCAUGC-5'
D5'-GCAUGCAUGCAU-3'
Answer & Solution
Correct answer: A. 5'-AUGCAUGCAUGC-3'
The mRNA has the same 5' to 3' sequence as the coding strand, with U replacing T. So 5'-ATGCATGCATGC-3' coding gives 5'-AUGCAUGCAUGC-3' mRNA.
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