1. Think About It.. 1. How does a DNA strand nitrogen base order form a second/complimentary DNA strand? 2.During what phase of the cell cycle is DNA replicated?

2. DNA Replication The DNA molecule unwinds. The molecule “unzips” at the H bonds. New nucleotides attach following the rules of base pairing. Each strand of the DNA serves as a template for a new strand.

3. DNA replication is carried out by a series of enzymes. DNA Polymerase joins individual nucleotides to the strand and proofreads each new strand reducing the chance of mistakes.

4. DNA Replication Animations http://www.youtube.com/watch?v=yqESR7 E4b_8http://www.youtube.com/watch?v=yqESR7 E4b_8 http://highered.mcgraw- hill.com/sites/0072943696/student_view0/ chapter3/animation__dna_replication__qui z_1_.htmlhttp://highered.mcgraw- hill.com/sites/0072943696/student_view0/ chapter3/animation__dna_replication__qui z_1_.html