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Greg Barsh, a geneticist at Stanford University, described it as a “genetic mystery,” so his team collected skin samples from four orange and four non-orange cat fetuses at spay-neuter clinics ...
It is extremely rare for a male cat to be orange and black, and indicates that this cat has an extra X chromosome or is a chimera—a fusion of more than one cat embryo into a whole adult cat.
Other common names include yellow, ginger, and marmalade. Red show cats have a deep orange color, but it can also present as a yellow or light ginger color. Unidentified "rufousing polygenes" are theorized to be the reason for this variance. Orange is epistatic to nonagouti, so all red cats are tabbies. "Solid" red show cats are usually low ...
Humans did not purposefully keep and breed cats the way the did with so many other animals to get specific traits (think dairy cows or hunting dogs). ... Maybe that’s why the orange cat intros ...
The orange mutant gene is found only on the X, or female, chromosome. As with humans, female cats have paired sex chromosomes, XX, and male cats have XY sex chromosomes. The female cat, therefore, can have the orange mutant gene on one X chromosome and the gene for a black coat on the other. The piebald gene is on a different chromosome.
They are known for their blue (silver-grey) water-resistant short hair double coats which are often slightly thick in texture (often showing "breaks" like a sheepskin) and orange or copper-coloured eyes. Chartreux cats are also known for their "smile"; due to the structure of their heads and their tapered muzzles, they often appear to be smiling.
This is why most orange cats are male (one copy of the orange gene from their mother on the X chromosome) but nearly all tricolor cats (calico) or tortoiseshell cats (black and orange) are female ...
A rare predominantly black cat with odd eyes. The odd-eyed colouring is caused when either the epistatic (recessive) white gene or dominant white (which masks any other colour genes and turns a cat completely solid white) [3] or the white spotting gene (which is the gene responsible for bicolour coats) [4] prevents melanin granules from reaching one eye during development, resulting in a cat ...