Which Is the Best Definition of Noncoding RNA

Multiple Choice

Which is the best definition of noncoding RNA?

A) A mutant mRNA that is not capable of making a protein.
B) Any RNA sequence that is not translated to make a protein
C) Any RNA sequence in an mRNA, or in the primary transcript used to make the mRNA, that is not translated to make a protein.
D) A functional RNA that is not translated to make a protein.