1. DNA Replication

2. Replication
DNA has to be copied before a cell divides (interphase S phase)
Mitosis
-prophase
-metaphase
-anaphase
-telophase G1 G2 S
phase
interphase
DNA replication takes
place in the S phase.

3. DNA Replication
Enzyme Helicase unwinds and separates the 2 DNA strands

4. DNA Replication
DNA polymerase can then add the new nucleotides

5. New DNA Strands
The Leading Strand is a continuous single strand (follows helicase)
The Lagging Strand is in pieces (Okazaki fragments) moves away from helicase replication
Ligase: glues fragments together

7. Semiconservative Model of Replication
DNA Template
New DNA
Parental DNA