An official website of the United States government
Here's how you know
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.
Size distribution of MER121 clusters. Human copies of MER121 found within a region of size 1.65 Mb, half the expected distance if copies were distributed uniformly across the genome.