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.
Synonymous and nonsynonymous divergence in the Fabeae chloroplast genes. All tree topologies were completely constrained as described in the Methods section. All trees were drawn to the same scale representing the number of substitutions per synonymous or nonsynonymous site.
