During this period, I became interested in how the new techniques of cloning and sequencing DNA could influence the study of genetics and I was an early and active proponent of the Human Genome Sequencing Project.

If the same cell migrates to the auditory cortex it would develop functions related to hearing regardless of its genetic lineage. Then with Francis Crick Leslie Barnett and Richard J. Brenner wrote "A Life In Science" (ISBN 0-9540278-0-9) paperback publiSydney Brennerd by Biomed Central Ltd.

Brenner made significant contributions to work on the genetic code and other areas of molecular biology while working in the Medical Research Council Unit in Cambridge England.