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Ch. 14 DNA – The Genetic Material

Ch. 14 DNA – The Genetic Material. By: Nas Anesi , Joshua Tuaniga , Anthony Ortiz . DNA Replication. DNA replication requires a template, nucleotides, and a polymerase enzyme New DNA molecules are produced by DNA polymerase copying a template

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Ch. 14 DNA – The Genetic Material

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  1. Ch. 14 DNA – The Genetic Material By: NasAnesi, Joshua Tuaniga, Anthony Ortiz

  2. DNA Replication • DNA replication requires a template, nucleotides, and a polymerase enzyme • New DNA molecules are produced by DNA polymerase copying a template • In replication, the process produces two new molecules each composed of one new strand and one old strand • When DNA is replicated, the 2 strands are split and each strand is transcripted to produce a new strand

  3. DNA Structure • Nucleotide building blocks for DNA: adenine, guanine, cytosine, and thymine. • In DNA, Erwin Chargaff found out that there were equal amounts of adenine and thymine, and of cytosine and guanine. • Watson and Crick found that DNA had 3 main components; 1. a five carbon sugar, 2. a phosphate group, 3. and an nitrogenous base • DNA’s backbone has a phosphodiester backbone and is also a double helix • Double helix is made up of long polymers of nucleotides • Watson and Crick also proposed that the two strands were held together by formation of hydrogen bonds between bases on opposite strands

  4. Links to videos http://www.youtube.com/watch?v=ZGHkHMoyC5I http://www.youtube.com/watch?v=yqESR7E4b_8 Copy and paste url to YouTube

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