DNA Structureand Replication

Outline

DNA Structure

Nitrogenous Bases

Nucleotides

DNA Replication

Semi Conservative

Enzymes

Remember the nitrogenous bases?

What is a Nucleotide?

DNA Structure…YOU TRY!!!

Using your nucleotides,

try and figure out

how DNA is put together!

Watson and Crick Model

Why DNA replication?

DNA Replication

DNA Replication

Semi-conservative

What Makes Replication Happen?

1. Helicase

Helicase unzips the DNA

at the REPLICATION FORK

What Makes Replication Happen?

2. DNA Polymerase

DNA Polymerase adds nucleotides to make new DNA

Eukaryotes

Prokaryotes

DNA Replication Video

http://www.youtube.com/watch?v=zdDkiRw1PdU&feature=related

YouTube: DNA Replication Animation by interact Medical