1. The DNA molecule unzips in both directions.
Topic: DNA replication Objective: DNA replication is when DNA is copied.
nucleotide
The DNA molecule unzips in both directions.

2. Replication copies the genetic information.
A single strand of DNA serves as a template for a new strand.
General Description:
DNA is replicated during the S (synthesis) stage during
Interphase of the cell cycle…..IS COPIED

3. LET’S IDENTIFY THE STRUCTURES ON THE RIGHT FIRST
PHOSPHATE AND SUGAR BACKBONE
BASES
FREE FLOATING BASES WITH ENZYME
NEW STRAND OF DNA

4. Proteins carry out the process of replication.
1. Enzyme is called HELICASE unzips the double helix
2. Free-floating bases pair with the exposed bases that have been unzipped
nucleotide
The DNA molecule unzips in both directions.
nucleotide
The DNA molecule unzips in both directions.

5. 3. Another enzyme, DNA polymerase, bond the nucleotides together to form the double helix
new strand
nucleotide

6. Two new molecules of DNA are formed
4. END RESULT:
Two new molecules of DNA are formed
original strand
new strand
Two molecules of DNA
Original is blue, new is orange.

7. DNA REPLICATION EXAMPLE:
DS DNA DNA UNZIPPED REPLICATED DNA
A-T A T A-T A-T
T-A T- -A T-A T-A
C-G C- -G C-G C-G
G-C G- -C G-C G-C
A-T A- -T A-T A-T
ORIGINAL STRAND HELICASE UNZIPS, NEED NEW BASES DNA POLYMERASE BONDS NEW NUCLEOTIDES TOGETHER
C T G A
T A
T G C C