1. DNA Replication

2. DNA Replication
The process of copying/synthesizing DNA
3 Step process

3. Step 1- Unzip DNA DNA chains are separated by helicase.
Helicase = enzyme that breaks the Hydrogen bond between bases.

4. Step 2 - Assembly
DNA polymerase builds a new DNA chain on the old DNA.
One complementary nucleotide is added at a time.
Base-pairing rules apply! (G-C A-T)

5. Step 3 – Identical DNA Molecules!!!
Only 1 side of the DNA molecules is new!!
- ½ of the DNA is new and ½ of the DNA is old!

6. DNA REPLICATION replication fork, helicase, nucleus, complete, DNA polymerase, old, new, identical, hydrogen, A, C, nucleotides
DNA replication occurs in the 1___ of cells. The DNA is replicated so that when a cell divides, each daughter cell receives a 2___ copy of genetic material. The enzyme 3___ begins by breaking the 4___ bonds between complementary bases (5__ with T, and 6__ with G) on opposite strands of DNA. New 7___ are added to each original strand by the enzyme 8___. As helicase moves along the DNA strand, the 9__ continues to widen and new unpaired nucleotides are added. The new (daughter) DNA strand can be continually built as complementary nucleotides (bases) are added by DNA polymerase. This process builds a 10___ DNA chain onto the 11__ DNA. The DNA is thus completely replicated and now there are 2 genetically 12___ DNA molecules in place of the original DNA.

7. replication fork, helicase, nucleus, complete, DNA polymerase, old, new, identical, hydrogen, A, C, nucleotides