1. 2/5/15 Objective: How does DNA replication occur? Do Now: http://www.youtube.com/watch?v=qy8dk5i S1f0

2. . Write the missing strand: A C T G C T G Template

3. DNA Replication DNA replication: DNA makes a copy of itself What does “to replicate” mean? If you start with one strand of DNA, how many strands will you end up with?

4. When During what process does DNA replication occur? This occurs during cell division (mitosis) –Regeneration –Growth –Repair

5. DNA as a Template Template Strand: Original strand of DNA Complementary Strand: New strand of DNA ATTCGGTAATTCGGTA Template Strand -T -A -G -C -A -T Complimentary Strand

6. A closer look at DNA replication… ATCGCGCGCGTA A T C G T A ATCGCGCGCGTAATCGCGCGCGTA

7. Recall… What are the 2 functions of enzymes? DNA Helicase: An enzyme that “unwinds” or “unzips” the DNA strand

8. Recall… What are the 2 functions of enzymes? DNA Polymerase: An enzyme that attaches the complimentary base pairs to the template strand

9. DNA Simulation ATCTGATCTG

10. www.youtube.com/watch?v=rpwjZX_z5rg http://www.youtube.com/watch?v=hfZ8o9D 1tus

11. Turn and Talk With the person sitting next to you. In your notesheet under “How DNA replication occurs” write the steps of DNA replication, remembering what we did in the simulation to help you.

12. Summary Describe how DNA is replicated