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DNA Replication. Base pairing G A C T A G A T C T G A T C T A.

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Presentation on theme: "DNA Replication. Base pairing G A C T A G A T C T G A T C T A."— Presentation transcript:

1 DNA Replication

2 Base pairing G A C T A G A T C T G A T C T A

3 What makes a nucleotide? List the 3 parts of a nucleotide Phosphate Sugar Nitrogen Base

4 More base pairing T T A G C T C T A A T C G A G A

5 5 Steps to DNA Replication Step 1 Enzyme initiates (starts) replication and untwists the helix

6 Step 2: DNA unzips

7 Step 3: Free Nucleotides attach (the nucleotides bind to the unzipped DNA strands)

8 Step 4: Enzymes check for errors A T G C A G A T C G A T A G T

9 Step 5: Enzymes twist the new strands (creating the double helix) Results: 2 identical copies

10 5 steps of DNA Replication 1.Enzyme initiates replication and untwists the helix 2.DNA unzips 3.Free nucleotides attach 4.Enzymes check for errors 5.Enzymes twist DNA – creating 2 double helix DNA stands

11 Semi-Conservative Replication Original DNA New DNA


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