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DNA Replication 2A - Coggle Diagram
DNA Replication 2A
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WHY DOES DNA COPY?
- DNA is copied prior to cell division as part of the
process of mitosis.
- This ensures that new cells have the same number of chromosomes
- To ensure that all cells have the same genes.
Lagging Strand
Formation
- The primer binds to the exposed section of DNA.
- As DNA polymerase is only able to add nucleotides to the 3’ end of the DNA strand, only a small section of the new DNA strand can be made.
- The opposing strand needs to be synthesised in small fragments
- This strand is called the lagging strand and its formation known as discontinuous.
- Only one strand can be synthesised in this way because DNA polymerase can only add nucleotides in a 3’ to 5’ direction,