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.
A schematic view of the genome, epigenome, and phenotype in a cell. The genome, under a certain environment (blue horizontal arrow), determines the epigenome (upward red arrows), while the epigenome regulates the genome by activating or repressing gene expressions (downward blue arrows). The genome covered with a specific set of epigenomic marks determines the phenotype (the upward white arrow)
