The MRNAs of Poxviruses Do Not Undergo Splicing

question 20

Multiple Choice

The mRNAs of poxviruses do not undergo splicing.Which of the following explains why?

• A) Poxvirus genomes are small and they need to conserve genome space.
• B) Poxviruses replicate in the cytoplasm of infected cells.
• C) They do not need to regulate gene expression through alternative splicing.
• D) They do not encode the proteins that carry out mRNA splicing.
• E) Poxvirus mRNAs do not contain exons.

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