Well, a female can be either homozygous dominant, and this is the case when we have, let's say, an uppercase B and an upper case B gene. So what's one example of a gene that is found on the X chromosome? Well, our gene that basically codes for color blindness. So an uppercase B basically means the individual will not be color blind. And in this particular case, if we suppose, let's suppose that the brown gene shown here is the gene that codes for color blindness. Uppercase B means that's the dominant gene and the individual will not be colorblind.