DNA Replication Section 12-2

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Presentation transcript:

DNA Replication Section 12-2 Objectives: 8.0 Identify the structure and function of DNA, RNA, and protein. 8.1 Explaining relationships among DNA, genes, and chromosomes

DNA Nitrogenous Bases: Adenine Thymine Cytosine Guanine The base pairings: Adenine and Thymine Cytosine and Guanine

DNA Replication Occurs in S (synthesis) phase of Interphase As the double helix separates into 2 strands, the hydrogen bonds holding together the nucleotide bases break. Each strand has a new complement strand formed: Each Adenine connects with a new Thymine. Each Cytosine connects with a new Guanine. AND VICE VERSA!!!!

The Purpose of Replication Replication occurs prior to cell division, so that new cells can form with complete sets of DNA. Practice: Write out a 24-base nucleotide sequence. (You MUST Use Color!!!!) Exchange sequences with someone. Write out the complement strand for your partner’s sequence. What have you just created? 

Build a DNA Molecule Online Activity http://learn.genetics.utah.edu/content/begin/dna/builddna/ Diagrams source: http://karimedalla.wordpress.com/2012/11/01/3-3-7-1-dna-structure/