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.
Convergent evolution of domains III of atp1i361g2 and rps3i249g2 in Polypodiales and Pteridaceae. Graphic display is as in figure 7. Convergent evolution of the structure of domain III is observed in species with both introns. When atp1i361g2 is lost (open triangles), domain III of rps3i249g2 undergoes structural changes. A conserved C-to-U editing site in a bulge of the stem region in Pteris cretica is highlighted in blue. Black circles indicate inserted nucleotides.
