Notes on DNA

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Notes on DNA

  1. 1. What are genes? (4 min)Bill Nyehttp://www.youtube.com/watch?v=V9BZ3zx8b8I&feature=related
  2. 2. Title: The DNA Date: August 27,2012Meaning:Importance:Description:Where is it located?Summary:
  3. 3. http://www.youtube.com/watch?v=sf0YXnAFBs8&feature=related History of DNA
  4. 4. Chromosome:a coiled, double rod-shaped form of condensed DNAthat forms during cell division.
  5. 5. Image source: http://www.dnalc.org/home.html
  6. 6. DNA is a complex moleculefound in all living things.The primary function of DNA isto store and transmit geneticinformation that tells cellswhich proteins to make andwhen to make them.
  7. 7. An idea about size:An average cell nucleus isabout 6 micrometers indiameter. The total length of the DNA inthe human genome is 1.8meters. There must be several levelsof coiling and supercoiling inDNA.
  8. 8. In 1953, James Watson and Francis Crick proposed a model for theDNA molecule that consisted of two nucleotide chains that wraparound each other to form a double spiral. This shape is called adouble helix.

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