When many genes are transcribed into a single mRNA strand, the mRNA is said to be __.
polycistronic

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Solution

The correct option is A polycistronic
mRNA can either be monocistronic or polycistronic. The former is the type in which a particular gene codes for a single mRNA strand, while the latter is the type in which many genes are transcribed into a single mRNA strand. Eukaryotes have monocistronic mRNA while prokaryotes have polycistronic mRNA.

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