(ABC) - The 6-week-old kitten has beaten the genetic odds by being born a boy, which is considered rare due to the gene that controls the orange and black fur color, found on the X chromosome.
"Females have two X chromosomes, while males have an XY combination," the Animal Welfare Association said in a press release. "This means that only female cats can have orange and black fur. To be a male tortoiseshell cat, he must have three sex chromosomes: two XXs and one Y."
“When I turned little Burrito over I was so surprised,” said Dr. Erin Henry of the AWA. “I’ve examined thousands of kittens while working at AWA and they are so rare that he may be the only male tortoiseshell I’ll ever see again.”