Cat breeders are aware that kittens expressing the x-linked calico coat pattern and tortoiseshell pattern are almost invariably females. which one of the following statements supports this conclusion? a. since males normally have one x and one y chromosome, random x inactivation during development of a male will create a mottled pattern. normal females are mottled, because they have two x chromosomes. b. since females normally have two x chromosomes, random x inactivation during development of a heterozygous female will create a mottled pattern. normal males are not mottled, because they only have one x chromosome and therefore can only express one of the two potential x-linked alleles. c. since females normally have two x chromosomes, expression of both potential x-linked alleles at the same time in all cells will create a mottled pattern. normal males are not mottled, because they only have one x chromosome and therefore can only express one of the two potential x-linked alleles. d. since females normally have two x chromosomes, random x inactivation during development of a homozygous female will create a mottled pattern. normal males are not mottled, because they are heterozygous and therefore express each one of the two potential x-linked alleles. b