exercises that integrate molecular biology with protein biochemistry techniques while providing a continuum of experiments. The course begins with basic techniques and culminates in the utilization of previously acquired technical experience and experimental material. Two organisms, Sacchaomyces cerevisiae and Escherichia coli, a single plasmid, and a single enzyme are the experimental material, yet the procedures and principles demonstrated are widely applicable to other systems. This text will serve as an excellent aid in the establishment or instruction of introductory courses in the biological sciences.All exercises and appendixes have been updatedIncludes new exercises on: Polymerase chain reactionBeta-Galactosidase detection in yeast coloniesWestern blottingNew procedures introduced for: Large-scale plasmid isolationYeast transformationDNA quantitationNew appendixes added, one of which provides details on accessing biological information sites on the Internet (World Wide Web)Use of non-radioactive materials and easy access to microbial culturesLaboratory exercises student tested for seven years

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