1. Objective: to discuss DNA structure, chromosome structure and replication
12.2

2. DNA length is very long
Imagine packing 300 meters of rope into your bookbag
This is similar to how much DNA is in a bacterium

3. Chromosome structure: pg 297 in your book!
DNA and protein together= chromatin
Chromatin is when DNA wraps around histones
Histones: protein (looks like little pebbles)

4. Double helix wraps around histones which is coiled and then super coiled and packed to make the chromosome
Page 297!!!

5. Replication: DNA copying itself
Structure of DNA explains how it can be copied easily
An enzyme (DNA polymerase) cuts and “unzips” DNA
Because of base pairing one side of the ladder can easily make the other side