Post by kdrod95 on Jun 29, 2011 20:06:33 GMT -5
*=Extra note
-----The "C" gene determine whether a cat is a complete albino (pink-eyed) or a temperature sensitive albino. The temperature sensitive albino genotypes are:
--- cbcb (Burmese,sepia),
--- cscs Siamese (pointed),
--- cbcs Tonkinese (mink).
*The cscs gene can turn a cat's eyes blue.
*If a cat has the dominant C allele, then the cat is non-albino and full pigment production occurs.
-----The "WW and Ww make a cat appear white, no matter what other color genes it may carry. Only a cat that is homozygous recessive (ww) will express normal pigmentation.
*Some cats with the W allele of this gene are deaf and/or have blue eye color. White cats with blue eyes are more likely to be deaf on the side of the blue eye.
-----The white spotting or piebald spotting gene, S/s
*An SS cat often has more extensive white patching than an Ss cat.
*This gene creates the familiar white blaze across the face, a white bib, tuxedo pattern, or dappled paws.
*The Sb allele may cause the mittens in Birman and Snowshoe breeds.
-----The sex-linked red gene, O, determines if there will be red variations to fur color.This gene is located on the X chromosome. In cats with red variants of fur tone, Red pigment completely replaces black or brown pigment.
*Males have only one X chromosome, so only have one allele of this gene.
--- O results in red fur
--- o results in non-orange fur
*Since females have two X chromosomes, they have two alleles of this gene.
--- OO results in red toned fur
--- oo results in non-orange fur
--- Oo results in a tortoiseshell cat
*The Oo does NOT result in the calico colors. The cat must have the white spotting for it to be calico.
*A cat with Oo and white spotting genes is called a calico.
For a cat to be tortoiseshell, calico, or one of the variants such as blue-cream or chocolate tortoiseshell, the cat must simultaneously express both O AND o. Rarely is a male a tortiseshell, calico or one of the dilutees.
-----B, b, bl Brown, black, and cinimon.
--- B is black
--- b is dark brown
--- bl is light brown or cinimon
*D/d; When a cat has two of the recessive d alleles (Maltese dilution), black fur becomes "blue" (appearing gray), chocolate fur becomes "lilac" (appearing light brown), cinnamon fur becomes fawn, and orange fur becomes cream.
-----Mc/mc (Tabby) sets the basic pattern of stripes that underlies the coat:
--- Mc produces a mackerel striped tabby (stripes look like thin fishbones and may break up into bars or spots)
--- mc produces a classic tabby pattern (broad bands, whirls, and spirals of dark color on pale background usually with bulls-eye or oyster pattern on flanks)
-----The "C" gene determine whether a cat is a complete albino (pink-eyed) or a temperature sensitive albino. The temperature sensitive albino genotypes are:
--- cbcb (Burmese,sepia),
--- cscs Siamese (pointed),
--- cbcs Tonkinese (mink).
*The cscs gene can turn a cat's eyes blue.
*If a cat has the dominant C allele, then the cat is non-albino and full pigment production occurs.
-----The "WW and Ww make a cat appear white, no matter what other color genes it may carry. Only a cat that is homozygous recessive (ww) will express normal pigmentation.
*Some cats with the W allele of this gene are deaf and/or have blue eye color. White cats with blue eyes are more likely to be deaf on the side of the blue eye.
-----The white spotting or piebald spotting gene, S/s
*An SS cat often has more extensive white patching than an Ss cat.
*This gene creates the familiar white blaze across the face, a white bib, tuxedo pattern, or dappled paws.
*The Sb allele may cause the mittens in Birman and Snowshoe breeds.
-----The sex-linked red gene, O, determines if there will be red variations to fur color.This gene is located on the X chromosome. In cats with red variants of fur tone, Red pigment completely replaces black or brown pigment.
*Males have only one X chromosome, so only have one allele of this gene.
--- O results in red fur
--- o results in non-orange fur
*Since females have two X chromosomes, they have two alleles of this gene.
--- OO results in red toned fur
--- oo results in non-orange fur
--- Oo results in a tortoiseshell cat
*The Oo does NOT result in the calico colors. The cat must have the white spotting for it to be calico.
*A cat with Oo and white spotting genes is called a calico.
For a cat to be tortoiseshell, calico, or one of the variants such as blue-cream or chocolate tortoiseshell, the cat must simultaneously express both O AND o. Rarely is a male a tortiseshell, calico or one of the dilutees.
-----B, b, bl Brown, black, and cinimon.
--- B is black
--- b is dark brown
--- bl is light brown or cinimon
*D/d; When a cat has two of the recessive d alleles (Maltese dilution), black fur becomes "blue" (appearing gray), chocolate fur becomes "lilac" (appearing light brown), cinnamon fur becomes fawn, and orange fur becomes cream.
-----Mc/mc (Tabby) sets the basic pattern of stripes that underlies the coat:
--- Mc produces a mackerel striped tabby (stripes look like thin fishbones and may break up into bars or spots)
--- mc produces a classic tabby pattern (broad bands, whirls, and spirals of dark color on pale background usually with bulls-eye or oyster pattern on flanks)