Xist

Xist is a special type of RNA that plays a key role in gene regulation within our cells. It is produced from the X chromosome and helps to "turn off" one of the two X chromosomes in females, ensuring proper gene dosage between males and females. Xist works by coating the chromosome it originates from, triggering changes that silence its genes. This process is essential for normal development and maintaining genetic balance. In essence, Xist acts as a molecular switch, helping cells manage which genes are active and which are turned off on the X chromosome.