1. Inside the Nucleus - DNA
The Heart of the Brain
Inside the Nucleus - DNA
DNA is Packaged into Structures Called Chromosomes

3. DNA Replication

4. DNA Replication Replication = DNA copies itself exactly
(Occurs within the nucleus)
Any mistake in copying = mutation
DNA mutation = chromosomal mutation

5. Basic Facts of DNA Replication
1. Complementary base pairing makes replication possible
C - G
A - T

6. Basic Facts of DNA Replication
2. One side of DNA molecule is a
template
for
making
the
other side (strand)

7. Process of DNA Replication
Uncoil & unzip DNA molecule
Enzyme (-ase) breaks weak Hydrogen Bond between bases

8. Process of DNA Replication
2. Enzyme brings in complementary N-bases
DNA Replicase

9. Process of DNA Replication
3. Insert N-bases

10. Replication in actiom
C - G
A - T

11. Each new DNA molecule
contains
one old strand
&
one new strand