How Does the First Nucleotide at the 5′ End of a New

question 49

Multiple Choice

How does the first nucleotide at the 5′ end of a new mRNA chain differ from the other nucleotides in the chain?

• A) The first nucleotide is always a uracil.
• B) The first nucleotide is always a cytosine.
• C) The first nucleotide retains its triphosphate group, while the others do not.
• D) The first nucleotide does not retain its triphosphate group, while the others in the chain do.
• E) The first nucleotide is always a modified cytosine.

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