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.
Amino acid compositions of PPR sequences with and without insertions/duplications. White bars represent sequences with insertion/duplication (n = 20) and black bars sequences without insertion/duplication (n = 294). Statistical differences between groups are indicated by stars. A p < 0.05 was considered significant.
