RNA Structure
The mRNA from which of the following would contain a poly-A tail?

Bacteriophage DNA ligase
Bacterial alpha-amylase
Human insulin
A restriction endonuclease from E. coli

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RNA Structure
The tertiary structure of yeast tRNA

is maintained mostly by non-Watson-Crick base pairing
All of these
resembles the 3-dimensional structure of other tRNAs
involves extensive base stacking interactions

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