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.
Colored zones correspond to parameter areas where alternative splicing can be maintained by balancing selection. Equilibrium frequency (p) can vary between 0 (blue) and 1 (red).
