Volume 40 of Advances in Genetics brings together a complete listing of subjects covered in Volumes 20-39 of this premier series. In one easy-to-use source, the interested librarian, student, and researcher can find references to specific articles on topics such as tumor suppressor genes, chromosome rearrangements, apoptosis, bax genes, the human genome project, muscular dystrophy, gene therapy, transcription factors, and transgenic mouse models. This cumulative subject index will serve not only as a complete overview of the major topics published in Advances in Genetics, but also as an indicator of the progress made in genetic research over the years.