Prior to the emergence of amber, and then russet, there had never been any scientific evidence of a yellow recessive mutation (e) in the extension gene in cats. The Extension gene contributes to the Melanocortin 1 Receptor (MC1R) protein pathway. MCR1 is …

Cat coat genetics determine the coloration, pattern, length, and texture of feline fur. The variations among cat coats are physical properties and should not be confused with cat breeds. A cat may display the coat of a certain breed without actually being that breed.

Phenotype: The coat color called "russet" in Burmese cats develops with age and is characterized by progressive amounts of red pigment on the head and dorsal surfaces. Mode of Inheritance: Autosomal recessive. Alleles: N = Normal or non-russet, R = Russet. Breeds appropriate for testing: Burmese. Explanation of Results:

Russet is due to a recessive mutation that causes black pigment (eumelanin) to gradually fade to a minimal amount while leaving red pigment (phaeomelanin) unaffected. Russet kittens resemble tabbies at birth, but have pink noses and paw-pads, pale fur around the pads and genitalia and a pale tail-tip - all of which would be dark in tabbies.

Rufus is a real character, and a very handsome young cat with stunning eye colour. He's from Russell and Missie and is a red russet, the only one that's been bred so far. I'm greatly looking forward to seeing kittens from him.

Russet is a relatively new coat color that appeared in a litter of kittens born in New Zealand in 2007 and is thought to be a mutation of the extension gene. The color develops with age and is characterized by progressive amounts of red pigment on the head and dorsal surfaces.

The rusty-spotted cat has a short reddish grey fur over most of the body with rusty spots on the back and flanks. Four blackish lines run over the eyes, and two of them extend over the neck. Six dark streaks are on each side of the head, extending over the cheeks and forehead.

Russet is found in the Burmese; kittens are born an unusual lilac/chocolate colour and eventually turn reddish. The progression of the colour change is depicted in the chart below. 9.

The Burmese is a breed of domestic cat that originated in Southeast Asia and was further developed in the United States. Variants in melanocortin 1 receptor (MC1R) causes common coat colour phenotypes in a variety of mammalian species but …

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