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Question

Polycistronic mRNA is characteristic of:

A
Prokaryotes
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B
Eukaryotes
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C
Both a and b
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D
Viruses
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Solution

The correct option is A Prokaryotes
Polycistronic mRNA is a mRNA that encodes several proteins and is characteristic of many bacterial (prokaryotes) and chloroplast mRNAs. Polycistronic mRNA carries several open reading frames (ORFs), each of which is translated into a polypeptide. Polycistronic mRNAs consist of a leader sequence which precedes the first gene. The gene is followed by an intercistronic region and then another gene.

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