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.
Mol. Biol. Evol. doi:10.1093/molbev/msaa015
The acknowledgments section of this paper has been expanded since original publication to include the European Research Council under the European Union’s Horizon 2020 research and innovation programme (Grant No. 714774) to D.S.
