Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A) Induction of a LexA-regulated gene(s) other than or in addition to recA is required for efficient Lac+ adaptive mutation. ○, recAo281; □, rec+; ◊, lexA3(Ind−); ▵, lexA3(Ind−) recAo281. (B) umuDC is not required for adaptive mutation. □, Δ(umuDC)595∷cat; ◊, umu+. In this and all figures, all strains shown together were tested in parallel, and the means ± SEM (error bars) of several independent cultures tested in parallel are displayed.
