X-chromosome inactivation (XCI) represents a remarkable strategy employed by female mammals to compensate for the presence of two X chromosomes, a phenomenon that has implications for chromosomal disorders such as Fragile X Syndrome and Rett Syndrome.This sophisticated process ensures that only one X chromosome remains active in each cell, effectively balancing genetic expression between sexes.

X chromosome inactivation is a fascinating process crucial to maintaining genetic balance in females, who possess two X chromosomes compared to males with only one.This unique mechanism ensures that one copy of the X chromosome is silenced, preventing an overabundance of gene expression.