Technical Comments Darwinian Evolution of Proteins By Bryan Clarke See allHide authors and affiliations Science 22 May 1970:Vol. 168, Issue 3934, pp. 1009-1011DOI: 10.1126/science.168.3934.1009 Bryan Clarke Find this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.