[Free Registration/Login may be required to access all resource tools.] Gene expression is the use of a gene whose product is necessary for that moment. Whenever a particular protein is needed, gene expression provides it. This module...

Provides some very straight forward information regarding genetic information an DNA. Find out about synthesizing proteins, the Central Dogma of molecular biology, and much more.

Use this simulation to create three different proteins, then explore the process of protein synthesis. This simulation must be downloaded and requires Java to run. Available in numerous languages.

Generate and collect three types of proteins, then move on to explore the factors that affect protein synthesis in a cell.

Students have the opportunity to work through a problem set over Eukaryotic genes. Correct answers are reinforced with a brief explanation. Incorrect answers are linked to tutorials to help solve the problem.

Read about how environmental factors such as nutrition can change a person's gene expression.

Learn how genes in DNA can provide instructions for proteins. Understand the central dogma of molecular biology: DNA, RNA, protein.

The author uses playing cards to provide a useful explanation of 'jumping genes'.

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...

Find out how epigenetic tags that tell genes whether to turn on or off in their lifetime, act as a cellular memory.

Ever wonder how a firefly creates light? Trace the process of light production in a firefly from transcription to the production of light as you watch this informative animation.

How does DNA perform those all-important functions of replication and protein synthesis? This interactive feature, from the Web site developed for the PBS series "A Science Odyssey," will help you explore and understand the secrets of DNA.

Build a gene network! The lac operon is a set of genes which are responsible for the metabolism of lactose in some bacterial cells. Explore the effects of mutations within the lac operon by adding or removing genes from the DNA.

Read a passage about the regulation of the Iac Operon and answer the follow-up questions.

Explains how the eyes of very diverse species have a common genetic ancestry.

Get the big picture of eukaryotic gene regulation, and learn how different genes are expressed in different cell types.

Get an overview of operons, regulatory DNA sequences, and regulatory genes. Also, explore repressor and activator proteins.

Students explore the effect of both genes and environment on the health of sand rats, a model for studying diabetes in humans.

Explains what dominant and recessive traits are and how they work, and provides a list of single gene traits with the degree of manifestation if they are dominant or recessive. Also discusses co-dominance, incomplete dominance, polygenic...

Here is the place where you can build your own monster. All living things, including monsters, have an instruction manual for building and making their bodies work. These instructions use a special code, most often known as a genetic...

Learn about the regulation of genes for lactose utilization. lac repressor, catabolite activator protein, and cAMP.

Get an in-depth look at the genome which includes all genes, regulatory sequences, and other information found in noncoding regions of DNA. Articles on webpage explores the large amount of information available about genes and DNA...

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...

This animation shows how the DNA genetic code leads to proteins that help us develop and function. [2:51]