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Biology

Biology. Chapter 14. DNA is a right handed double helix Complementary base pairs: A-T (2 hydrogen bonds) and G-C (3 hydrogen bonds) Major groove and minor groove. Figure 14.4. The nitrogenous base consists of purine a two ringed structure or pyrimidine a single ringed structure.

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Biology

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  1. Biology Chapter 14

  2. DNA is a right handed double helix • Complementary base pairs: A-T (2 hydrogen bonds) and G-C (3 hydrogen bonds) • Major groove and minor groove

  3. Figure 14.4 • The nitrogenous base consists of purine a two ringed structure or pyrimidine a single ringed structure

  4. DNA Replication • DNA replicates in a semiconservative model. • Half of the parent helix is conserved in each daughter helix. • This was proven by the Meselson-Stahl experiment.

  5. Links • http://en.wikipedia.org/wiki/Meselson%E2%80%93Stahl_experiment • http://www.mhhe.com/biosci/bio_animations/04_MH_DNAReplication_Web/index.html • http://highered.mcgraw-hill.com/sites/0073532223/student_view0/chapter14/animations_and_videos.html

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