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How many codons code for amino acids, including the methionine codon? (1) ______ (1) How many...

How many codons code for amino acids, including the methionine codon? (1)

______

(1) How many codons do not code for amino acids?

_______

(1) What do the codons that do not code for amino acids code for?

Our book (and lecture) made the point at least twice that eukaryotic pre-mRNA transcripts do not have a definite, consistent end. What does this mean, and why is it so? (2)
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