However, females have two X chromosomes and, therefore, have two copies of the Cx32 gene.
Females pass on one or the other of their X chromosomes to their children-sons or daughters.
However, this affects males and females differently because males and females have a different number of X chromosomes.
On the other hand, that same gene must be changed on both of the X-chromosomes in a female for her to be affected.
A female who carries a defective recessive gene on one of her two X chromosomes will not have the disease because she also has one good X chromosome.