 A DNA test for feline coat color carriers and feline parentage has also been developed by Lyons, and is being offered to cat breeders, like the PKD test, so that they can determine whether cats they have bred have correct pedigrees, and whether these cats carry colorpoints, Burmese Colour Restriction, long hair, colour dilution or rare coat colors, such as chocolate and cinnamon.One of Lyons' current projects is identification of the genes that cause head defect, a lethal deformity in American Burmese cats.She is also working on identifying genes that cause Progressive Retinal Atrophy (PRA), which causes affected kittens to become blind at the age of approximately two months.