Each cell's nucleus contains chromosomes made up of DNA strands. They contain the genetic material that determines an organism's traits and are passed on to offspring. Cats each have a set number of chromosomes that include a pair of sex chromosomes known as X and Y. Chromosomes occur in pairs, with one of each pair coming from the mother and the other from the father. Genes at corresponding locations on each pair affect the same trait, and together determine the cat's color, fur length and o...