Question

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.

Answer 1

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