The chromosomes that, when paired, determine the sex/gender of the organism, in humans XX = female while XY = male.
An X-linked recessive disorder that affects the blood's ability to clot.
An X-linked recessive disorder in which the muscles deteriorate over time.
An X-linked recessive disorder in which a person cannot distinguish between the colors red and green.
A disorder caused by a dominant mutant allele on the X chromosome in which enamel that protects teeth does not properly develop.