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 subset of the operons presented in figure 3. (A) Operons with variable levels of codon selection across genomes. (B) Operons with relatively constant levels of codon selection across genomes. Operon numbers correspond to those presented in Dam et al. (2007).
