Rosalind Franklin, the Dark Lady of Science, is featured in an intriguing poster that is sure to inspire young scientists.

DNA Helix, DNA structure, DNA bases, Nucleotides, strands of DNA, Bonding in DNA, and bonding between bases are the topics delved into in this thorough site.

DNA is the molecule of life, as life's secrets are encoded in DNA. In this interactive activity. we see the famous double helix structure of DNA.

A new way of testing DNA samples uses a chip. This allows scientists to examine thousands of genes instead of just one at a time.

A step-by-step animation shows how introns are removed during RNA splicing.

Animated slide show illustrating Morton Mandel and Akiko Higa's calcium chloride method of DNA transformation.

This is a basic animation of how DNA is structured.

A slideshow tracing human migration to show that "all living humans originated from populations of ancestors who migrated out of Africa less than 100,000 years ago. Learn how scientists have used genetic markers to trace the migration...

Explains how DNA contains genetic material and how it is housed in chromosomes. This lesson is 2 of 5 in the series titled "DNA."

Explains how DNA contains genetic material and how it is housed in chromosomes. This lesson is 4 of 5 in the series titled "DNA."

Replication 1, Replication 2, 5'to 3' direction, polymerase replication, and ligase replication are the topics delved into in this complete site. The text is supplemented with animation for clarity.

Animation illustrating how the jumping gene, Alu, reproduces by copying itself and inserting into new chromosomes.

Illustrated animation explains the basics of embryonic stem cells and how they are established and used.

This lesson will show the difference in structure between deoxyribonucleic acid and ribonucleic acid. It is 3 of 4 in the series titled "DNA vs RNA."

This lesson will show the difference in structure between deoxyribonucleic acid and ribonucleic acid. It is 4 of 4 in the series titled "DNA vs RNA."

Article about a recent book on Rosalind Franklin and the contribution she made to the discovery and identification of "The substance of life -- the structure of DNA."

DNA

DNA

This article provides a discussion of DNA and how it replicates. Includes a chromosome map of a human male, a close-up of chromosomes just before cell division and a close up of a DNA molecule.

A vertical image of a DNA double helix.

A 3D computer generated model of humans DNA structure. The double helix image labels base pairs, diameter, major and minor grooves.

Follow Meselson and Stahl through their experiments to determine how DNA replicates.

Tutorial on DNA basics that goes along with an online quiz over the material. Use the naviagation buttons at the bottom of the page to go to the quiz over the material.

DNA