1. DNA Replication Section 12-2 in Textbook

2. ANIMAL CELL

3. Chromosomes- long thread like group of genes found in the nucleus. Gene- sequence of nitrogen bases on a chromosome that code for one characteristic

4. THIS IS WRONG! !!!!!!

5. DNA Replication (Copying) Replication is necessary for MITOSIS. (Cell division) Occurs during INTERPHASE in NUCLEUS Parent cellDaughter cells

6. Process of DNA Replication Enzyme “unzips” Original DNA Strand Each side acts as a Template for the NEW strand. complementaryEnzymes lay down the complementary base pairs. –Thymine pairs with Adenine –Cytosine pairs with Guanine –In RNA Adenine pairs with Uracil

7. In DNA: Adenine bonds with Thymine Guanine bonds with Cytosine In RNA: Adenine bonds with Uracil Guanine bonds with Cytosine

8. Original “Template” Strand = RED New Strand = BLUE

9. END RESULT…….. TWO EXACT COPIES OF DNA!!!

10. RNA vs DNA Physical Differences: DNA: Double Helix RNA: Single Strand Chemical Differences: DNA: Deoxyribose sugar and Thymine RNA: Ribose sugar and Uracil

11. DNA Replication Animation http://www.ncc.gmu.edu/dna/repanim.htm