University of Michigan DNA Sequencing Centre : A quick and dirty reference to terms used in MolecularBiology by Dr. Robert H. Lyons

Biology Online.org : A biology site dedticated to discsssion, forum, tutorials and a good dictionary.

Life Science : Database to search words, book titles, protocols etc.,

Kimball's Biology Pages : A robust search system with very good illustration.

Biotechterms.org : Glossary of Biotechnology Terms by Kimball R. Nill.