Cat coat genetics basic pattern of stripes that underlies the coat. The basic wild-type tabby gene, "Mc", produces what is called a "mackerel striped" tabby (stripes look like thin fishbones and may break up into bars or spots), while a recessive mutant, "mc", produces a blotched or "classic" tabby pattern (broad bands, whorls, and spirals of dark color on pale background usually with bulls-eye or oyster pattern on flank). The classic tabby is most common in Iran, Great Britain and in lands that were once part of the British Empire and Persian Empire. The gene responsible for this differential patterning has been identified
Savannah cat the Chausie and Bengal cat, most first generation cats will possess many or all of the serval's exotic looking traits, while these traits often diminish in later generations. Male Savannahs tend to be larger than females. Early-generation Savannahs can weigh , with the most weight usually attributed to the F1 or F2 neutered males due to genetics. Later-generation Savannahs are usually between . Because of the random factors in Savannah genetics, size can vary significantly, even in one litter. The coat of a Savannah should have a spotted pattern, the only pattern accepted by the TICA breed standard. The spotted