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.
Birth–death processes for generating species trees and gene trees. Death events (species extinctions and gene loss) are in dark gray (red online), birth events (speciation, duplication and transfer events) are light gray (green online). a) Birth–death processes modeling speciation and extinction. b) Birth–death process modeling gene family evolution inside a species tree.
