RNA that is the complement of the mRNA needed for protein translation occurs in
A) positive-sense single-stranded RNA viruses.
B) negative-sense single-stranded RNA viruses.
C) double-stranded RNA viruses.
D) DNA viruses.
E) RNA retroviruses.

Question

Quizplus · Accepted Answer

Negative-sense single-stranded RNA viruses have RNA genomes that are complementary to the mRNA needed for protein translation. This means that before protein synthesis can occur, the viral genome must first be transcribed into mRNA, which is the same sequence as the genome's complementary strand.

RNA That Is the Complement of the MRNA Needed for Protein