Fig. 5.
Proposed scenario of the origin of the Type III CRISPR-Cas systems. Adopted from Koonin et al., 2019 [70].
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.