Chapter 1 Links
The Roots of DNA Research

Genes, Chromosomes, DNA, and Nucleic Acid

• Primer on Molecular Genetics
  • A fairly extensive review of Molecular Genetics. The Introduction which includes information on DNA, genes, and chromosomes is the most accessible. This site also includes information on mapping and sequencing the human genome, model organism research, and data collection and interpretation.
• What the Heck is a Gene?
  • This neat site is easy to read and conversationally written. It has links to sites that have images of biological molecules.
• Our genes, ourselves?
  • This interesting essay which originally appeared in BioScience discusses the question if our fate is in ouor genes.
• DNA Graphics Created with PovChem
  • This neat site includes graphics of DNA in various positions and various places.
• Nucleic Acids
  • This is a complete site on nucleic acids. The text is divided into seven sections including: Organization of Genetic Material, Semiconservative Nature of DNA Synthesis, The Chemistry of DNA Synthesis, The Proteins of DNA Synthesis, DNA repair, Properties of the Three Major RNA Species, and RNA Synthesis.
• BioTech: Introduction to Nucleic Acids
  • This site mainly focuses on DNA.

Gregor Mendel

• MendelWeb
  • MendelWeb is an educational resource for teachers and students interested in the origins of classical genetics, introductory data analysis, elementary plant science, and the history and literature of science. Constructed around Gregor Mendel's 1865 paper "Versuche über Pflanzen Hybriden" and a revised version of the English translation by C.T. Druery and William Bateson, "Experiments in Plant Hybridization", MendelWeb is offered as a public sourcebook and collaborative environment compatible with a variety of guided and independent studies.
• The Johann Gregor Mendel Page
  • A lot of different information can be found at this site, including ten interesting facts.
• Gregor Mendel (JLH Lab)
  • Just some light reading for you.

  Essays of his life

• Villanova University - Gregor Mendel
• About Johann Gregor Mendel
• Biography of Mendel

Thomas Hunt Morgan

• Thomas Hunt Morgan (1866-1945)
  • A simple review which includes a vita, synopsis, and references.
• Thomas Hunt Morgan
  • This also has a review of his life and it includes pictures.

Sperm, Egg, and Zygote

• Spermatological Images
  • This site includes many drawings and micrographs of sperm from various organisms.
• Human sperm in egg
  • This micrograph illustrates nicely that the sperm midpiece enters the egg totally and may well play a role in embryogenesis.
• Study says sperm may follow the scent of egg
  • A short but interesting article from the Detroit News dated Nov. 8, 1995.
• Pictures of Embryo Growth
  • The following three pictures illustrate the growth of an embryo, from a mature egg, to two cells, to four cells.
• The Visible Embryo
  • The Visible Embryo is an on-line tutorial teaching the first four weeks of human development.

Streptococcus pneumoniae

• Streptococcus pneumoniae
  • A general overview of this bacteria which includes information on general characteristics, types of infection, and treatment and prevention.
• The Streptococcus
  • A brief introduction to the entire genus.
• Streptococcus pneumoniae
  • From the National Center for Genome Resources

Hershey and Chase

• Experiments that Inspire
  • This is an article from Access Excellence on the Hershey-Chase Experiments. There are also links to graphics.
• Alfred Day Hershey
  • A simple review which includes a vita, synopsis, and references.