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 and b) Two eight-taxa trees and (c) a 4-taxa long-branch-attraction (LBA) tree used in the simulation. Branch lengths are in the expected number of nucleotide substitutions per codon. The 4 short branches in trees 1 and 2 have length 0.01. These are the “shallow” trees. We also used three “deep” trees with branches 4 times as long.
