Why are sex-linked disorders more common in males than in females? there are many more disorders on the y chromosome than on the x. x inactivation will always inactivate an x with a disorder on it. the presence of the second x chromosome protects females from many disorders. the female x chromosome is stronger then the y chromosome.

Hmmm i think its the third one because men only have 1 x chromosome therefore without the other one if the x chromosome on a men carries a disorder it will show because there is no other chromosome to balance it out and in women the disorder has to show on both X chronosome (and its rarer) for a disorder to appear therefore women having a second X chromosome is effectively a protection