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 two models fitted to branches after duplication events. Immediate models the expectation if selection pressures change only briefly after duplication, whereas All descendants models the expectation if paralogs evolve at a consistently different rate.
