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.

This animated explanation introduces the concept of mitosis by reviewing the research of Walther Flemming.

This article from DNA from the beginning is loaded with goodies about genetics and DNA. Starting with Mendel all the way through the concept of DNA, you will see how life is given certain characteristics. Some animations and audio clips are given.

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.

Explore the convept that DNA and proteins are key molecules of the cell nucleus.

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.

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!

Two French scientists describe the research they did to figure out how bacteria turn certain genes on and off. The topic is a little involved, but the animations should help you understand the process.

Find out what happened when Mendel crossed two hybrid pea plants. The animations do a good job explaining why these crosses produce a 3:1 ratio of traits.

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. Here you can see how common genes are evidence for common ancestors.

Homeobox genes are important because they determine the overall body plan for most animals. This article explains the experiments that helped scientists discover these master genes. Article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.

The link will list a variety of topics about genetics. Click on topic 17 for a very good tutorial on the discovery of DNA. Click along the bottom margin for the different screens.

Early research showed that genes code for proteins. This was based on studies using mutant strains of bread mold. 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.

Learn about the principle of dominance as you watch animations showing Mendel's experiments with pea plants. Find out what happened when he crossed plants that produced green seeds with those that produced yellow seeds.

This animation explains how Nettie Stevens research on meal worms unlocked the chromosomal basis of gender.

Students learn how the process of soil solarization is used to pasteurize agricultural fields before planting crops. Soil solarization is a pest control technique in agriculture that uses the sun’s radiation to heat the soil and eliminate unwanted pests that could harm the crops. The approach is compared to other pest control methods such as fumigation and herbicide application, highlighting the respective benefits and drawbacks. In preparation for the associated hands-on activity on soil biosolarization, students learn how changing the variables involved in the solarizing process (such as the tarp material, soil water content and addition of organic matter) impacts the technique’s effectiveness. A PowerPoint® presentation and pre/post-quiz is provided.