Explains that the nearly endless number of arrangements of nucleotides within the DNA molecule account for the differences between individuals, as well as for those between species. Models illustrate the structure of the DNA molecule and its duplication prior to cell divison. Cinemicroscopy of the division of a living cell, supplemented by animation, illustrates the five stages of mitotic process. Includes a short explanation of meiosis.

We digitized and uploaded this film from the A/V Geeks 16mm Archive. Email us at [email protected] if you have questions about the footage and are interested in using it in your project.