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DNA: Discovery & Replication

DNA: Discovery & Replication. Does DNA = genes?. DNA is in the nucleus DNA is in the nucleus of all species looked at each species has it’s own ‘amount’ of DNA Somatic cells have twice the DNA as gametes. Rosalind Franklin: July 25, 1920 – April 16, 1958. Maurice Wilkins:

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DNA: Discovery & Replication

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  1. DNA: Discovery & Replication

  2. Does DNA = genes? DNA is in the nucleus DNA is in the nucleus of all species looked at each species has it’s own ‘amount’ of DNA Somatic cells have twice the DNA as gametes

  3. Rosalind Franklin: July 25, 1920 – April 16, 1958 Maurice Wilkins: December 15, 1916 – October 5, 2004

  4. Figure 10.3C Twist

  5. Figure 10.3D_2 Hydrogen bond G C T A A T C G Partial chemicalstructure

  6. Figure 10.5B 3 end 5 end P HO 5 2 4 T A 3 3 1 1 4 2 5 P P C G P P G C P P T A OH P 5 end 3 end

  7. 3C 5C 5C 3C http://cm3.missiondata.com/uploads/43/Image/dna%20101/dna-pairs.jpg

  8. Figure 10.4A_s1 A T C G G C A T T A A parentalmoleculeof DNA

  9. Figure 10.4A_s2 T A T A A T C G C G G C G C G C C A A T T A Freenucleotides T A T A A parentalmoleculeof DNA The parental strandsseparate and serveas templates

  10. Figure 10.4A_s3 T A T A T A T A A T C G C G C G C G G C G C G C G G C C C A A T A T T A A T Freenucleotides T A T A T A T A A parentalmoleculeof DNA The parental strandsseparate and serveas templates Two identicaldaughter moleculesof DNA are formed

  11. Figure 10.5C 3 DNA polymerasemolecule This daughterstrand is synthesizedcontinuously 5 Parental DNA 5 3 Replication fork This daughterstrand is synthesizedin pieces 3 5 http://www.youtube.com/watch?v=5VefaI0LrgE&feature=related 5 3 DNA ligase Overall direction of replication

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