In my second year, after moving to the Medical School, I began the courses of Anatomy and Physiology. I had begun to see that I was interested in cells and their functions.

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.