- Created by: Amina
- Created on: 26-05-13 14:28
Semi-conservative replication - the replication of DNA to form to new DNA molecules from the original molecule.
- The DNA helicase enzyme unwinds and unzips the DNA molecule by breaking the hydrogen bonds between the nitrogenous bases.
- Both DNA strands act as a template.
- The DNA polymerase 3 brings in free nucleotides present in the cell nucleus, which base pair with the original strand.
- The bases are complementary to one another.
- 2 new DNA molecules form and are linked together by the ligase enzyme which seals back the hydrogen bonds.
- The DNA polymerase then joins the nucleotides together, forming the sugar-phosphate backbone.
- The 2 new DNA molecules produced are identical to one another.
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