PBS
Pbs Learning Media: Mitosis
This video segment, adapted from the Interactive Secret of Life videodisc, explains the stages of mitosis, the process of dividing equally a cell's massive jumble of DNA just prior to cell division. [1:34]
Ohio State University
Ohio State University: Plant Biotechnology
A review of genetic manipulation techniques in plants. Parts of the discussion are advanced. Also contains a number of pictures, charts, and links.
Other
My Science Box: Dna Models
Hands-on lesson in which students play with puzzle pieces representing the DNA molecule to discover the molecular structure of DNA.