DNA Structure

An Interactive Animated Nonlinear Tutorial by Eric Martz
Adapted to J(S)mol by Angel Herráez
Part of the Biomodel website by Angel Herráez, Univ. de Alcalá (Spain)

A. Double helix by element: base pairs, hydrogen bonding	B. The Code Explanation of codons and anticodons
C. Strands and helical backbone	D. Ends, Antiparallelism

This tutorial is designed to complement Biology or Biochemistry and Molecular Biology books, so it is not by itself a complete introduction to DNA structure.

1. This version  works in any modern browser.
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2. This tutorial is designed to complement an introduction to DNA, by providing tools for a self-directed exploration. It does not tell a story (but does offer questions for students and a lesson plan for teachers). As a preamble to the tutorial below, or for a story that introduces DNA structure with interactive molecular graphics, we recommend
   • DNA Structure in Biomodel-3 (basic level, adequate for secondary school).
   • DNA Structure in Biomodel-1 (advanced level).
   • Exploring DNA Structure by Andrew Carter (Jmol version by Frieda Reichsman).
   • Other DNA links.
3. The Animated Interactive Tutorial Pages (A, B, C, D): please visit the 4 sections in the colored panels.
4. Questions for Students and a Lesson Plan for Teachers.
   More Molecules for High School Teachers.
5. More DNA Resources includes tutorials for high school students, college freshmen, interactive Shockwave simulations of agarose gel electrophoresis to learn about electrical charge of DNA, cutting with restriction endonucleases, etc.

Methods, Acknowledgements, and References.

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