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.
The tree was generated with MEGA4.0 program using the NJ method. Bootstrap values are indicated at the branches in black numbers. The unrooted tree in the lower-left corner was constructed using the same method.
