11. HOW DNA WORKS chromatin PACKAGING Histones (proteins) chromosomes
12. MAKING COPIES of DNA 1st http://www.youtube.com/watch?v=teV62zrm2P0 http://bioteach.ubc.ca/TeachingResources/MolecularBiology/DNAReplication.swf http://www.virtualogos.net/parquevirtual/mod/resource/view.php?inpopup=true&id=15291