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Questions  

Choose the incorrect statement with respect to structure of mRNA. 

a
Complete length of mRNA is described as translational unit.
b
The first Codon in a translational unit is AUG.
c
The last codon in a translational unit does not indicate any amino acid.
d
Untranslated regions are present before the start codon and after the termination codon.

detailed solution

Correct option is A

Complete length of mRNA is not translational unit. The translational unit is present in between Untranslated Region I and Untranslated Region II. In Eukaryotes, in additions to this there is a Cap at the 5ʹ end and poly A tail at the 3ʹ end.

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