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) Average omega ratios (ω) and (B) Average nonsynonymous (dN, solid circles) and synonymous (dS, open circles) substitutions for proteins involved in spermatogenesis (SMG), sperm metabolism (MET), sperm motility (MOT), sperm capacitation (CAP), acrosome reaction (AR) and sperm-egg interaction (SEI). Standard errors are shown.
