X chromosome inactivation

例句：

1. 1. In humans, X chromosome inactivation is a crucial process for determining gender.
   在人类中，X染色体失活是决定性别的关键过程。
2. 2. The study of X chromosome inactivation has led to important discoveries about the genetic basis of human reproduction.
   对X染色体失活的研究导致了关于人类生殖遗传基础的重要发现。
3. 3. X chromosome inactivation can lead to mutations that affect the development of the brain and other organs.
   X染色体失活可能导致影响大脑和其他器官发育的突变。