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) The number of OTUs with singletons. B. The number of OTUs without singletons. (C) The relative number of OTUs with singletons. D. The relative number of OTUs without singletons.
