two x 예문

• As you probably know a man gets his X chromosome from one of his mother's two X chromosomes, and his Y chromosome from his father.
  여러분이 알듯 , 남자는 X 유전자를 그의 어머니의 2 개 X 염색체 중에서 하나를 받고 , 아버지로부터 Y 염색체를 받습니다 .