The good folks at Cold Spring Harbor Laboratory provide a number of helpful and well-designed educational materials on their site, and this Biology Animation Library is a real find. Visitors to the site can view one of a dozen animations offered here, and they can also download them for their own use. The animations include a brief overview of cloning, several on DNA, gel electrophoresis, and...

The color graphics data for meiotic double-stranded breaks were provided in tabular and graphical form by Drs. Frederic Baudat and Alain Nicolas of the Institut Curie, Section de Recherche. The data are part of their published study, reported in the Proceedings of the National Academy of Scientists, Volume 94, pages 5213-5218. A link to the original article (available in HTML or .pdf formats) is...