Perspectives Adaptive mutation: who's really in the garden? + See all authors and affiliations Science 21 Apr 1995:Vol. 268, Issue 5209, pp. 373-374DOI: 10.1126/science.7716540 JA ShapiroFind 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 below.