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.

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.

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.

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

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.

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 resource is an online companion of museum-mounted exhibition about Darwin and his revolutionary theory. It covers Darwin's upbringing, influences, and discoveries employing a rich mix of media: text, photographs, videos, sound files, primary source artifacts, and more.

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.

Carol Hurst provides this sample chapter from "Picturing Math." Gathering data is a frequent part of solving problems and satisfying curiosity, which includes working with graphs and using mathematical tools such as averaging and other computations.

This site presents the full text of Dickens' novel "David Copperfield." Content is supplemented with illustrations.

Site from Ibiblio.org on the exhibit at the Library of Congress in Washington, DC. Contains information on the history of the scrolls, an extensive explanation of each scroll, and pictures.

Don't let long words intimidate. Here students learn to break up long words into syllables.