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.
Difference in recombination at NOR loci between human and chimpanzee. Red blocks represent rDNA arrays. Grey blocks represent non-rDNA repeat arrays. CFZ: chiasma-free zone. ‘X’ indicates an assumed recombination site. Black arrows show possible recombinants. Black circles represent centromeres.
