Patti Is Passing on a Mutated Gene on Her X

Multiple Choice

Patti is passing on a mutated gene on her X chromosome. Why is her son more likely to express the mutation in his phenotype than her daughter is?

A) Males are more likely to inherit the bad copy of a gene whenever there is one.
B) Males do not have a second X chromosome that might have a good copy of the gene.
C) Estrogen will silence a mutated gene once her daughter experiences puberty.
D) Her daughter's Y chromosome will probably have a good copy of that gene to offset the bad one.