 Image Number K7299-11 |
Geneticist Hans Cheng analyzes information for genetic mapping of chickens using an automatic DNA sequencer.
Photo by Scott Bauer
An official website of the United States government
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.