How Is the Poly(A)tail Added to the 3' Ends of the MRNAs

question 8

Multiple Choice

How is the poly(A) tail added to the 3' ends of the mRNAs produced during infection with a influenza virus?

• A) The viral polymerase stutters at a poly(U) sequence.
• B) The cellular poly(A) polymerase adds it.
• C) Influenza virus mRNAs do not have poly(A) tails.
• D) The viral poly(A) polymerase adds it after the mRNA is released from the template.
• E) The entire poly(A) tail is encoded in the genome.

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