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.

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.

Eukaryotic cells have separate DNA from mitochondria and chloroplasts which indicates that they were once primitive cells on their own. 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. 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.

Watson and Crick knew that there had to be some type of molecule that was important in protein synthesis. That molecule was RNA. 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.

RNA is now considered to be the first molecule that could transmit information. This article looks at the scientists and experiments that developed this idea. Article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.

An animated pedigree clearly explains the way hemophilia was inherited in the Romanov family. Interpreting pedigrees and sex-linked crosses should be much easier to understand after going through this tutorial.

Experiments found that DNA could sometimes recover from damage. This article illustrates how the discovery was made. Article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.

Some viruses use RNA and reverse transcription to function. This article covers the scientists and experiments that made this discovery. Article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page.

The discovery that mRNA is not an exact copy of the DNA is the topic of this section from the DNA Learning Center. 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.

Theodore Boveri will describe his research with worms that helped him discover the principles of meiosis. The animations of meiosis are really good.

Read about the life cycle of dandelions from their first appearance in the spring. Includes audio narration in 16 additional languages with text in English.

This site on the book "Dandelions" by Eve Bunting, includes a review of the book, a listing of things to notice and talk about, activities related to the book, other related books, and links to other resources.

At this website, read all twenty-two chapters of Daniel Defoe's "Moll Flanders." Included is a brief paragraph introducing the text and its main character.

At this website, read all eight chapters of Daniel Defoe's novel, "Robinson Crusoe." Also provided is a brief paragraph introducing the text, its context, it protagonist, and its reasons for its popularity.

This site from Palomar College contains a quiz that provides a nice review of the historyof Darwin's work and natural selection. Providesfor immediate feedback as soon as an answer is entered.