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.
Phylogenetic relationship of opsin genes of insects (red shade), mantis shrimps (yellow shade), water flea (blue shade), and human. A neighbor-joining phylogeny inferred from 979 aligned amino acid sites is shown. On each node, bootstrap values are indicated in the order of neighbor-joining method/maximum-likelihood method. Accession numbers or annotation IDs are in brackets. Classification of the opsin genes is indicated on the right side.
