In this video segment from NOVA scienceNOW, meet researchers who are studying obesity and trying to understand the role that hormones and genetics can play in regulating appetite. [3:25]

Learn how scientists use gel electrophoresis to isolate a DNA fragment for study.

Learn about the structure of DNA in a few steps in this video. Video explains the double helix structure of the DNA as a ladder with beams and steps. Video gives the components of the beams and steps. [1:30]

Enhance studies of DNA with these video clips illustrating the structure of the hereditary material. Be sure to check the second page, too, to see the 3D models.

This lesson will describe the structure and function of the nucleus of a cell.

This lesson will discuss how scientists use dominant and recessive genes to predict inherited traits of offspring.

This lesson will identify basic biological factors. It is 1 of 4 in the series titled "Biological Influences."

A graphic which communicates the beauty and intricacy of DNA, illustrating how DNA is the core to everything. [3:25]

Understand how a gene is a stretch of DNA on a chromosome. Find out about alleles in their role as versions sequence variants of a gene. [8:18]

DNA video in real time. Show the amazing process of DNA transcription using amino acids to turn genes into proteins. [7:47]

Learn about the structure and function of DNA in this video. Video shows the parts of the DNA structure as well as exploring how DNA is used to hold our genetic information. Teachers can visit Amoeba Sisters' website for a handout that...

A video overviewing the process of cell division specifically mitosis. Video explains the different stages of mitosis and gives students an acronym to remember order of the stages. Teachers can visit Amoeba Sisters' website for a handout...

A video that explores how DNA leads to proteins. With this video students will understand the two steps of protein synthesis: transcription and translation. The steps are described in detail so students can see key steps of each process...

Hank imagines himself breaking into the Hot Pockets factory to steal their secret recipes and instruction manuals in order to help us understand how the processes known as DNA transcription and translation allow our cells to build...

An educational music video about cells. [2:41]

An animation showing DNA Microarrays which looks at how the processes of gene expression profiling, protein microarrays, and comparative genomic hybridization microarrays work. [2:20]

Two high school students talk about their experiment using DNA barcoding to identify the ingredients in over 200 animal products, including many popular foods. They found some cases of misrepresentation. Aired Jan. 22, 2010. [3:33]

[Free Registration/Login may be required to access all resource tools.] Set to dramatic music, this captioned video shows a graphical representation of the transcription of DNA to proteins. [10:46]

Through a narrated presentation learn about the cell theory, and find out about the characteristics all cells share. [6:38]

An explanation of what DNA and genes are. Includes video and text. [1:13]

Your cells contain an amazing factory that builds the RNA and protein machines that keep you alive. Learn how this factory works and what the relationship is between DNA, RNA, and proteins. [3:48]

Find out about the basics of cells, chromosomes, and the genes contained in your DNA. [4:26]

Using information from molecular research, this 3-D animation shows how DNA is replicated at the molecular level. It involves an enzyme that unwinds the DNA and other enzymes that copy the two resulting strands. [1:07]

Paul Andersen describes the major mutations found in the living world. He starts with an analogy comparing the information in DNA with the information in a recipe. Changes in the DNA can result in changes to the protein, like changes in...