1. Catalyst

2. Big Goals
All students will develop, run, and present an original lab study.
100% Proficient; 90% Advanced
At least 80% mastery on all EOC and college level questions
At least 5 points of growth on the ACT

3. Survey

4. Announcements

5. Hook

6. SWBAT summarize the primary purpose of DNA replication
SWBAT summarize the primary purpose of DNA replication. SWBAT explain why DNA replication is considered semi-conservative. SWBAT describe the role of enzymes in DNA replication SWBAT demonstrate DNA replication by creating a complementary strand of DNA for a given DNA template.

7. I. What is DNA Replication?
-DNA Replication is when DNA makes a copy of itself.
-When DNA replicates it produces two DNA molecules that are identical (exactly the same) as the original parent strand:
Picture of DNA Replication:
DNA Replication
1 DNA
2 DNA

8. II. Steps of DNA Replication
Step 1: Weak hydrogen bonds are broken by enzymes and DNA strands begin to unzip.
Step 2: Free nucleotides join the open DNA to form 2 new DNA molecules.
Step 3: There are 2 new molecules of DNA which are exact copies of each other. Each DNA molecule has one old strand and one new strand.

9. II. Steps of DNA Replication Continued
Step 3: Enzymes “zip” up the newly synthesized DNA.
Step 4: There are 2 new molecules of DNA which are exact copies of each other. Each DNA molecule has one old strand and one new strand.

10. Semi-Conservative
DNA replication is semi-conservative, because each new double helix contains one original strand and one new strand.

12. III. Why is DNA Replication Important?
-DNA Replication happens when cells divide to form two new cells. It is important that DNA replication happens because it allows each of the new cells to have DNA .
-DNA Replication happens in the nucleus of a cell.
-DNA Replication is important because cells need DNA to make proteins they need to survive.
-DNA Replication allows a cell to pass down its genetic information to the next generation.

13. Practice with DNA Replication
-Let’s practice DNA replication! I’ll give you one strand of DNA, and you complete the complementary strand of DNA. (Remember, A=T, G=C)
Original Strand: ATTAGGCTATTGACGATAGCCATGGA
Complementary Strand: TAATCCGATAACTGCTATCGGTACCT

14. Practice with DNA Replication
Original Strand: GCCATAGGATTTATATGGCATAT
Complementary Strand:

15. Practice with DNA Replication
Original Strand: GCCATAGGATTTATATGGCATAT
Complementary Strand: CGGTATCCTAAATATACCGTATA
Original Strand: CGTAATGCGGATAGTTCACGTAT
Original Strand: GCTATTACGAATCGTTACGAGG