Structure of DNA & RNA - PowerPoint PPT Presentation

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Structure of DNA & RNA

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  1. Structure of DNA & RNA

  2. DNA • Deoxyribose Nucleic Acid • Double Helix • Twisted Ladder

  3. Sides of the Ladder • Deoxyribose Sugar • Phosphate

  4. 4 Nitrogen Bases • Pyrimidines • Cytosine • Thymine • Purines • Adenine • Guanine

  5. DNA Structure • Cytosine and Guanine always pair up. • Adenine and Thymine always pair up.

  6. DNA Structure

  7. DNA • The sequence of bases in DNA is the genetic code. • Sections of DNA are coded (instructions) for the cell to build proteins.

  8. RNA • Ribose Nucleic Acid • Single backbone of Ribose sugar and Phosphate

  9. RNA Nitrogen Bases • Cytosine, Guanine & Adenine are the same. • Uracil replaces Thymine • Uracil always pairs with Adenine.

  10. References • Cuschieri, Alfred. "THE MOLECULAR BASIS OF GENETICS." Department of Anatomy University of Malta. Alfred Cuschieri, 1 Jan. 2012. Web. 1 Jan. 2012.      <http://staff.um.edu.mt/acus1/3Molgen.htm>. • "THE MOLECULAR BASIS OF GENETICS." Deartment of Anatomy University of Malta. Alfred Cuschieri, 1 Jan. 2012. Web. 1 Jan. 2012.      <http://staff.um.edu.mt/acus1/3Molgen.htm>. • Wikipedia. "DNA - Wikipedia." Wikipedia. Wikimedia Foundation, Inc., 1 Jan.      2012. Web. 1 Jan. 2012. <http://en.wikipedia.org/wiki/DNA>.

  11. References • DNA and Geneology Research Foundation. "DNA and Geneology Research focus of      upcoming TSLA seminar." DNA and Geneology Research Foundation. Business &      Heritage Clarksville , 1 Jan. 2012. Web. 1 Jan. 2012.      <http://businessclarksville.com/2011/05/10/      dna-and-geneology-research-focus-of-upcoming-tsla-seminar-25505/>. • News-Medical.net. "http://www.news-medical.net/health/What-is-RNA.aspx." News-medical.net. AZoNetwork Websites, 1 Jan. 2012. Web. 1 Jan.      2012. <http://www.news-medical.net/health/What-is-RNA.aspx>.