So if our individual is uppercase B, that means they won't be colorblind, but if they're lowercase B, they will be colorblind. And this type of scenario is called hemisiagus. Hemisiagus means we only have one of the X chromosomes and not two. And so we only have one of these sex link genes and not two, as we have in the female case. Now, the last thing that I'd like to briefly talk about is the inactivation of the X chromosome in female individuals. So it turns out that in female individuals, in female somatic cells, one of the chromosomes, one of the X chromosomes is actually inactivated and we produce this structure known as the bar body.