2.3.3- DNA replication


Why does DNA replicate?

  • dna is copied before cell division
  • new cell has the full amount of DNA
  • important so each generation has the genetic information

How is DNA replicated: 

a dna molecule has a paired base structure which makes it easy for DNA to copy itself

1. DNA helicase breaks the hydrogen bonds between the 2 strands. the helix unzips into 2 single strands

2. each original strand acts as a template for a new strand. free nucleotides join the exposed bases on…


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