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.
Schematic representation of skewed X chromosome inactivation. X chromosome inactivation occurs randomly, with an equal probability for the maternally or paternally derived X chromosome to be inactivated, resulting in a mosaic distribution of cells (50:50). Skewed X chromosome inactivation occurs when the inactivation of one X chromosome is favored over the other, leading to an uneven number of cells with each chromosome inactivated (>50:<50).
