The sequence below is present on one nucleotide chain of a DNA duplex that...

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4. The sequence below is present on one nucleotide chain of a DNA duplex that is opened up in a replication fork. Synthesis of a RNA primer begins on this template below at the base that is underlined.
3’..... GGTCATGGAATGGTTACCA...5’
a) If the RNA primer is six nucleotides long, what is its base sequence (written
5’ to 3’) (1 mark)?
5’-____________________________________ b) Which enzyme synthesizes this RNA primer (1 mark)?
c) Which enzyme synthesizes DNA from the 3’-OH at the end of this primer (1 mark)?
d) Which enzyme degrades this primer and replaces it with DNA (1 mark)?

3’..... GGTCATGGAATGGTTACCA ...5’

G C

T A

A U

C G

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