Figure 9.
Possible base pairings of the O:C, O:T, G:C and G:T pairs with expected hydrogen bonds.
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.