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.
Scenario of the p53 family gene evolution. The earliest indication of p53 family genes dates back to invertebrates and unicellular choanoflagellae. Aside from independent gene duplications, such as in sea anemone or mosquitos, the earliest indication for mammalian gene splitting dates back to cartilaginous fishes, with tentative orthologs visible in elephant sharks, and all three mammalian paralogs appearing in bony fishes.
