Comment on

• Adaptive mutation by deletions in small mononucleotide repeats.

  Rosenberg SM, Longerich S, Gee P, Harris RS. Rosenberg SM, et al. Science. 1994 Jul 15;265(5170):405-7. doi: 10.1126/science.8023163. Science. 1994. PMID: 8023163
• Adaptive reversion of a frameshift mutation in Escherichia coli by simple base deletions in homopolymeric runs.

  Foster PL, Trimarchi JM. Foster PL, et al. Science. 1994 Jul 15;265(5170):407-9. doi: 10.1126/science.8023164. Science. 1994. PMID: 8023164 Free PMC article.