Here are three activities--concentration, matching, and flashcards--to help learn or review the units of customary measurement. Users must enable JavaScript.

This site is a guide to help students analyze visual media. Further research questions included.

Complete descriptions of microtubules and microfilaments. Flip to the following pages to go through a cytoskeleton tutorial with graphics of cross-sections and diagrams. You can test yourself at the end.

These photographs supplied by Genelex Corporation depict actual DNA fingerprints and show the types of information that can be gleaned from them.

Genes are actually a specific sequence of DNA and they have a clear start and stop. Learn about the discovery and sequencing of genes at this site. This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.

This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page. The topic is the human genome.

A good tutorial on replication. The menu bar at the top provides more history, background and animations.

Bacterial conjugation and experiments with viruses indicated that they must also contain DNA. This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.

Alfred Sturtevant will describe his gene mapping research with fruit flies. This animated explanation will show how he bred fruit flies to determine the proximity of genes.

Thomas Hunt Morgan will explain the research he did to determine that some traits are linked to the sex of an individual.

The human genome project was established to determine the sequence of DNA bases that are found in each human cell. Understanding what the resulting proteins do is an entirely different project. This page is about how we are trying to understand what the human genome means, and includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom.

Genes are turned on and off in many ways. This article covers chemical signal transduction. Article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.

The genetic code is actually the three letter combination of bases that codes for an amino acid. This article describes the discovery of this code. Article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.

The scientists and experiments that discovered that DNA is coiled into chromosomes are the topic of this article. Article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.

A nice tutorial on DNA structure. The menu at the bottom allows you to view some different information.

This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page. The topic is the study of cell division, mitosis, and cell death.

Many scientists have worked on discovering what genes are "turned on" within cells at different stages of development. DNA arrays and gene chips are techniques that have been developed. This article will help you understand these difficult concepts. Article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.

Long after Gregor Mendel knew that something controlled heredity three other scientists finally put his research together with new evidence from microscopes to determine that genes do exist. This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.

Recombinant DNA technology has made it possible to gain insight into how genes work. This concept is further developed in this article with an animated explanation, art gallery, audio/video interviews, biographies, and an interactive problem to solve. An exciting, interesting way to learn about rDNA!

The subject of eugenics tried to explain behavior with simple genetics principles, which we now know is not possible. The subject is handled well. This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.