The Detroit Post
Monday, 29 November, 2021

Why Are Cats Calico

author
Carole Stephens
• Saturday, 31 October, 2020
• 15 min read

Calico cats are known for their sassy but loving personalities and penchant for causing trouble. Photo: Kurt I adopted my spunky calico cat, Lou, when she was just a kitten.

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(Source: catappy.com)

Contents

A standard calico has a primarily white coat with patches of orange and black. A dilute calico has the same white base, but their patches are softened to charcoal gray, cream and light orange.

The caliber has the same color variations as calicoes, with the addition of the signature tabby stripes. Coat color is a sex-linked trait and occurs because of dominant and recessive genes that interact with X chromosomes.

What most people don’t know is that the genetic code for having either orange or black fur is only found in the X chromosome. With just 1 X chromosome, a male cat only has the chance of displaying the black or orange gene, not both.

Photo: Katie Venison/Potful As it turns out, calicoes are well-known for their personalities and, more specifically, their sassy attitudes. Despite these qualities, Lou also exhibits neediness, a tendency to be startled by the crunch of a chip and a sweetness.

Although not all breed standards recognize the beauty of a calico cat, quite a few do, including Persians and Maine Coons. In the 1870s, the Japanese declared calico cats to be an official symbol of fortune in Japan, and the country’s signature lucky cat, maneki-neko, is often depicted with calico coloring.

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(Source: biology.stackexchange.com)

With a sassy but loving personality and a penchant for causing trouble, calico cats make ordinary days far more interesting. Growing up on a small farm in rural North Dakota, Katie developed a love for animals of all shapes and sizes.

Dan Meth Male calicoes suffer from Klinefelter's syndrome, which means they are always sterile and usually have a lot of health problems ranging from brain damage to genital deformities and organ failure. Wikipedia/dance “The existence of patches in calico cats was traced in a study determining the migration of domesticated cats along trade routes in Europe and Northern Africa.

The proportion of cats having the orange mutant gene found in calicoes was traced to the port cities along the Mediterranean in France, Spain and Italy, originating from Egypt.” Dan Meth Long ago, Japanese fishermen kept them on board their boats to protect them in storms and frighten away the ghosts of jealous ancestors.

Dan Meth “One famous calico rescued her entire person and animal family from a burning house by scratching on each bedroom door.” Dan Meth According to Irish folklore, you can cure warts by rubbing them against the tail of a calico during the month of May.

Especially 18th century French painter Jean-Baptiste-Simeon Hardin, who really had a knack for capturing the way calico cats will mess with seafood that's hanging from a hook. Calico were seen as a good luck omen and to this day are placed in the entrances of homes and businesses everywhere.

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Wikipedia In 2007, the rural Okinawa train station was about to be closed due to budget issues. But the town appointed a local stray calico cat named Tampa to be Station Master.

The publicity from Tampa's appointment cause a 17% increase in ridership from the station and saved it from being closed. For 21 years, she greeted moviegoers in the lobby as they entered and left the theater and sometimes even climbed on to people's laps as they enjoyed a movie.

Given some of his other religious beliefs, people took the rumor as truth even after he denied it in numerous interviews. Dan Meth According to research presented by Dr. Elizabeth Smith of the University of California San Francisco, “Uncovering how only one X chromosome is inactivated will help explain the whole process of epigenetic control, meaning the way changes in gene activity can be inherited without changing the DNA code.

Studio Ghibli A stray rabid calico kitten in suburban New York caused the health-department to robocall every resident in the area. Domestic cats with a spotted or partly-colored coat that consists of 3 colors.

The calico cat is most commonly thought of as being typically 25% to 75% white with large orange and black patches (or sometimes cream and gray patches); however, the calico cat can have any three colors in its pattern. They are almost exclusively female except under rare genetic conditions.

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(Source: www.pinterest.com)

A calico is not to be confused with a tortoiseshell, which has a mostly mottled coat of black/orange or gray/cream with relatively few to no white markings. However, outside North America, the calico pattern is more usually called tortoiseshell and white .

In the province of Quebec, Canada, they are sometimes called chatted'España (French for '(female) cat of Spain'). Other names include brindle, tricolor cat, mike Nero () (Japanese for 'triple fur'), and lapjeskat (Dutch for 'patches cat'); calicoes with diluted coloration have been called claimant or clouded tiger.

“ Calico refers only to a color pattern on the fur, from colorful printed Calico fabric, not to a cat breed or any reference to any other traits, such as its eyes. Among the breeds whose formal standards allow calico coloration are the Manx cat, American Short hair, Maine Coon, British Short hair, Persian cat, Arabian MAU, Japanese Bobtail, Exotic Short hair, Siberian, Turkish Van, Turkish Angora and Norwegian Forest cat.

In most cases, males are only one color (for instance, black) as they have only one X chromosome. Male calicoes can happen when a male cat has two X chromosomes (Klinefelter syndrome, with OXY sex chromosomes and generally sterile); is a chimera, with two different cell types; or, rarely, when some skin cells of the developing kitten spontaneously mutate.

Fairly common among calicoes , dilutes are distinguished by having gray (known as blue), cream and gold colors instead of the traditional black, red and brown patches along with their white. The coat pattern of calico cats does not define any breed, but occurs incidentally in cats that express a range of color patterns; accordingly the effect has no definitive historical background.

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(Source: 2catsandablog.wordpress.com)

However, the existence of patches in calico cats was traced to a certain degree by Neil Todd in a study determining the migration of domesticated cats along trade routes in Europe and Northern Africa. The proportion of cats having the orange mutant gene found in calicoes was traced to the port cities along the Mediterranean in Greece, France, Spain and Italy, originating from Egypt.

In genetic terms, calico cats are tortoiseshells in every way, except that in addition they express a white spotting gene. In contrast a non-white-spotted tortoiseshell usually has small patches of color or even something like a salt-and-pepper sprinkling.

This reflects the genetic effects on relative speeds of migration of melanocytes and X-inactivation in the embryo. Serious study of calico cats seems to have begun about 1948 when Murray Barr and his graduate student E.G. Bertram noticed dark, drumstick -shaped masses inside the nuclei of nerve cells of female cats, but not in male cats.

In 1959, Japanese cell biologist Subsume Ohio determined the Barr bodies were X chromosomes. In 1961, Mary Lyon proposed the concept of X-inactivation: one of the two X chromosomes inside a female mammal shuts off.

Calico cats are almost always female because the locus of the gene for the orange/non-orange coloring is on the X chromosome. Since the Y chromosome does not have any locus for the orange gene, there is no chance that an By male could have both orange and non-orange genes together, which is what it takes to create tortoiseshell or calico coloring.

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(Source: catvills.com)

One exception is that in rare cases faulty cell division may leave an extra X chromosome in one of the gametes that produced the male cat. That extra X then is reproduced in each of his cells, a condition referred to as OXY, or Klinefelter syndrome.

All but about one in three thousand of the rare calico or tortoiseshell male cats are sterile because of the chromosome abnormality, and breeders reject any exceptions for stud purposes because they generally are of poor physical quality and fertility. Even in the rare cases where a male calico is healthy and fertile, most cat registries will not accept them as show animals.

As Sue Hubble stated in her book Shrinking the Cat: Genetic Engineering Before We Knew About Genes, The orange mutant gene is found only on the X, or female, chromosome.

If expressed, this gene codes for white, or no color, and is dominant over the alleles that code for a certain color (i.e. orange or black), making the white spots on calico cats. If that is the case, those several genes will be expressed in a blotchy coat of the tortoiseshell or calico kind.

But the male, with his single X chromosome, has only one of that particular coat-color gene: he can be not-ginger, or he can be ginger (although some modifier genes can add a bit of white here and there), but unless he has a chromosomal abnormality he cannot be a calico cat. It is currently very difficult to reproduce the fur patterns of calico cats by cloning.

calico cats female why cat always babble
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Since all female mammals have two X chromosomes, one might wonder if this phenomenon could have a more widespread impact on cloning in the future.” Calico cats may have already provided findings relating to physiological differences between male and female mammals.

Cats of this coloration are believed to bring good luck in the folklore of many cultures. In the late nineteenth century, Eugene Field published The Duel “, a poem for children also known as “The Gingham Dog and the Calico Cat”.

Thanks To A Genetic Anomaly, An Extremely Rare Fertile Male Calico Is Born”. Mammalian Genetics: X/imprinting Archived 17 June 2010 at the Payback Machine “.

Media related to Calico cats at Wikimedia Commons The answer to this lies within their DNA; with a phenomenon found in all female mammals called X-chromosome inactivation.

To correct this disparity, mammalian females have evolved a unique mechanism of dosage compensation called X-chromosome inactivation. The silenced chromosome then condenses and is stably maintained in this inactive state throughout all future cell divisions in the life of that individual.

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A prime example of X-chromosome inactivation can be found in the calico coat color patterning exhibited in some cats. In these cats, the fur pigmentation gene is X-linked; one X-chromosome encodes an orange coat color and the other gives a black or tabby.

Depending on which X-chromosome each cell chooses to leave active, either an orange or a black coat color results and the cat’s fur becomes a mosaic of patches. The exception to this rule is observed, albeit very rarely, in male cats whose chromosome makeup contains an XXY-complement.

The occurrence of this complement allows X-chromosome inactivation to take place in these male cats giving them the familiar calico colored coat. The study of X-chromosome inactivation may also provide insight into cancer biology, as two active X’s have been found in many human breast and ovarian tumors.

Because of their color similarities to the Baltimore oriole (the state bird) and the Baltimore checker spot butterfly (the state insect), calicoes were granted their official title on October 1, 2001. Via Amazon Fun fact: Dating back to the 1870s in Japan, calico cats were seen as a symbol of good fortune.

Classy Cat Steals The Show During Orchestral Performance These tortoise shell cats have white color patches on the chest, paws, and face.

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(Source: www.arizonapetvet.com)

The rare calico cats are believed as lucky charms, and they bring a bright future to their owners. Also, it is mentioned as money cats in the US due to their rarity of male calico cats.

To avoid hairballs and to improve coat weekly grooming is recommended. Exercise and play regularly with your cats to maintain their muscle and body tone.

A calico cat named judge is one of the celebrity kitties with 670.8k followers. In the 19th century, children’s poems titled ‘ The Gingham Dog and the Calico Cat ’.

Mani Nero, a popular Japanese statue is a Calico Bobtail. In the early period, calico cats are used in boats by Japanese fishermen to protect during harsh storms.

Male cats, with genetic aberration having OXY chromosomes can express Calico and/or Tortoiseshell color combination. However, due to abnormal chromosomal configuration, male Calico or Tortoiseshell cats are sterile.

calico cat breeds encyclopedia mommy
(Source: www.cat-breeds-encyclopedia.com)

Unlike the usual Calico coat combination (white, black and orange), if the coat color of a cat has patches of white, blue and cream, then the cat is known as muted Calico. Calico and Tortoiseshell cats, due to their independent and quirky nature, make wonderful pets and are fun to be around.

If proper training is provided in the kitten stage, they make good companions. As per the folklore of some cultures, Calico and Tortoiseshell cats are believed to bring luck to the owner.

The Japanese sailors often carry Calico cats in their voyage, believing that the cats will protect them while at sea. Hence, for these reasons and their striking color pattern, many cat lovers have them as their pets.

While you might assume that a cat like Sherman is valuable because of his rarity, male calicoes are of little interest to breeders because they're typically sterile. Although most people know that the vast majority of calico cats are female, they don’t always know that calico refers to a color pattern, not a breed of cat.

Calico cats are named for their coat color that resembles calico cloth, which was once imported from England to India. Calico can also have dilute coats, with fawn, cream, chocolate, and gray patches, rather than the traditional bright white, orange, and black.

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If your heart is set on owning one of these tricolored beauties, here are some of the more popular breeds that have calico coloring: Ivaloueva / Getty Images It's a fact that 99.9 percent of all calico cats are female because of the unique chromosomal makeup that determines the color variations in their coats.

Each cat has a pair of sex chromosomes with the possible combinations of XX (female) and By (male). The X chromosome also carries the coding gene for the black and orange colors in a calico's coat.

During development, one X chromosome will override the other, allowing either black or orange to be the dominant color. This particular color development occurs in each individual cell, shutting down one X chromosome while allowing the other to be active.

To make things even more complicated, calico cats must also inherit a gene unrelated to the X and Y chromosomes that codes for white fur. There is one exception to the females-only calico rule: A genetic anomaly called Klinefelter’s Syndrome.

In humans, Klinefelter’s Syndrome occurs when a male inherits an extra X chromosome from either his father or mother, making his genetic makeup OXY. Unfortunately, since male calico cats are born because of a genetic anomaly, they are often much less healthy than their female counterparts.

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(Source: www.pinterest.com)

Male calicoes often have reduced bone mineral content, increasing the risk for broken bones; cognitive and mental developmental issues, which can lead to behavioral problems; and increased body fat, which can cause joint pain, heart disease, and diabetes. Written by Christina Donnelly Calico cats and kittens are well-known for their gorgeous, tricolored coats in hues of orange, black, and white.

Although orange, black, and white are the most common calico colors, some cats may have cream, bluish-black, red, or chocolate brown in their coats, too. Yeezycat / Instagram It's a fact that 99.9 percent of all calico cats are female due to the unique chromosomal makeup that determines the color variations in their coats.

Each cat has a pair of sex chromosomes with the possible combinations of XX (female) and By (male). The X chromosome also carries the coding gene for the black and orange colors in a calico's coat.

To manage these two sets of color code, the female embryo will shut down one X chromosome in each cell, resulting in the black and orange variations in a calico's coat. OXY Syndrome renders male calicoes sterile and can be the root cause of many other health problems.

If you do have a male calico, however, a healthy diet, exercise, and lots of love and attention can help him live a longer and happier life. Pretzelbitez / Instagram Because calico cats aren't one single breed (and can't be bred) they don't share certain personality traits, temperaments, or tendencies.

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Many breeds of cats can be calico, however, so if you're looking for a certain personality type, be sure to read up on American short hairs, Japanese bobtails, and Maine coons, among others. But remember: the key to a long, happy, and healthy kitty life is a nutritious diet, protective shelter, and plenty of love (when they'll allow it).

Back in the day, Japanese fishermen brought calico cats onto their ships to protect them from harsh storms, as well as the ghosts of their envious ancestors. According to Irish folklore, you can cure warts by rubbing a calico cat's tail on the affected area but only during May.

The famous Japanese Beckoning Cat (or Mani Nero) was modeled after a calico. The Mani Nero dates back to the 1870s, so these kitties have a long history as bringers of luck.

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