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	Tortoiseshell cat - Wikipedia, the free encyclopedia
		Tortoiseshell is a coloring found in cats caused by a combination of specific genetic traits.
		For a cat to be calico, it must simultaneously express both of the two genes, O and o, which are located at the same location on the X chromosome.
		In normal female tortoiseshell cats and in Klinefelter males, the position of the patches depends on which X-chromosome is active in each cell and which is inactivated to become a Barr body.
	en.wikipedia.org /wiki/Tortoiseshell_cat (415 words)

	Encyclopedia: Turkish Van cat (Site not responding. Last check: 2007-10-08)
		Lake Van is a region of temperature extremes and the cats have evolved a coat that grows thick in the winter with a large ruff and bottlebrush tail for the harsh winters and then sheds out short in the body for the warm summers.
		Originating in the Lake Van area of southeastern Turkey, these cats have been domesticated for centuries (in fact for as long as the famous Saluki Hound); they are much loved and prized by the Turks for their exceptional character and unique colouring.
		Turkish Van cats are considered on of the largest of the domestic breeds and are quite massive at maturity - the only cat that cannot follow its head through a fence due to the breadth of the chest.
	www.nationmaster.com /encyclopedia/Turkish-Van-cat (1239 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		The coats of tortoiseshell cats are a mixture of colours.
		Cats with a basic white colour and red and fl patches are known as tortoiseshell-and-white in Britain, or, in the United States, calico.
		For 3 a cat to be 4 calico, it must simultaneously 1 express two genes, 9 O and o, which are located 0 at the same 1 location on the X 2 chromosome.
	www.puricel.com /calico_cat_.htm (288 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		Tortoiseshell cats are therefore heterozygous (not true-breeding) for red colour.
		Male cats only inherit one X chromosome so this is active in all skin cells as there is nothing equivalent on the Y chromosome which could "switch off" the O gene.
		At the other extreme, a genetically tortoiseshell cat may appear to be solid ginger or solid fl because of the way the X chromosomes activated - these cats will produce unexpected tortie kittens in appropriate matings.
	www.artcats.com /calico.html (2066 words)

	Fun Facts About Cat Coats
		A solid colored cat with a spot of white on the chest is said to have a locket and one with white on chest and belly is said to be bikini-marked.
		A calico cat is a red and fl tortoiseshell with white patches, a dilute calico one who is blue and cream with white patches.
		A cat with solid color points is called a color point and is generally referred by the color of the points such as a chocolate point Siamese.
	www.petfinder.org /journalindex.cgi?path=public/breeds/catbreeds/1.4.12.txt&template=templateprint.html (793 words)

	CatStuff: Folklore and Superstitions
		Cats can forecast the weather: they predict the wind by clawing at carpets and curtains; rain is highly likely when a cat busily washes its ears.
		Tortoiseshell cats were believed to be able to see into the future and could give the gift to a lucky child in the household.
		A cat on top of a tombstone meant certainly that the soul of the departed buried was possessed by the devil.
	www.xmission.com /~emailbox/folklore.htm (3024 words)

	Mosaicism, Tortie Tomcats and Genetically Impossible Kittens (Site not responding. Last check: 2007-10-08)
		Tortoiseshell males from pedigree breeds are perhaps the most interesting as these have complete genetic histories detailing the colours of parents and related cats.
		The brindling and facial pattern is typical of tortoiseshell cats, but it seems that 15 year old Pandora has a mutation that prevents her producing red pigment.
		The distribution of orange and fl in a normal tortoiseshell cat depends on the migration rate of the cells and on the randomness of X chromosome inactivation.
	messybeast.com /mosaicism.htm (10926 words)

	Tortoiseshell and Tricolour Cats (Site not responding. Last check: 2007-10-08)
		The tortoiseshell markings can also be combined with the genes for tipped, smoked or shaded in which case the tortoiseshell colours are restricted to the hair-tips rather than going all the way to the root.
		Tortoiseshell cats have two X chromosomes, one carrying the gene for orange coat colour and the other carrying the gene for fl coat colour.
		Tortoiseshell Bengal variants have occurred during breed development, but it is not an accepted colour in a breed which aims to re-create a wild look.
	www.messybeast.com /tricolours.htm (2426 words)

	Guardian Unlimited \| Weather \| It has been my observation that in the cat world tortoiseshell (known in the US as ...
		That is until one day, when I visited a cat protection league re-homing centre, and saw a female ginger cat suckling her litter of three (all ginger) kittens.
		All tortoiseshell and tortoiseshell and white (Calico) cats are female.
		Ken Donald, Chelmsford UK Calico cats are always female (or XXY males) as the mix of colour is generated by the fact that in each cell in the embryo, one of the X chromosomes is 'switched off'.
	www.guardian.co.uk /notesandqueries/query/0,5753,-26177,00.html (1503 words)

	Cat superstitions
		All cats, including fl ones, were held in high esteem among the ancient Egyptians and protected by law from injury and death.
		Alley cats were often fed by poor, lonely old ladies, and when witch hysteria struck Europe, and many of these homeless women were accused of practicing fl magic, their cat companions (especially fl ones) were deemed guilty of witchery by association.
		This worldwide respect for the cat is probably rooted in those ancient religions in which the cat was a sacred animal and where retribution would befall those who harmed it.
	www.kinrossfolds.com /cattery/superstition.html (1406 words)

	Purina Cat Chow: Cat Care Center: Physical
		If a female cat has the orange gene on only one X chromosome, some hair will be orange, with other colors also present in the hair coat.
		In order for a female cat to be orange, she needs to have orange genes on both X chromosomes.
		Your cat will not be harmed, as she will be enveloped in soft fabric.
	www.catchow.com /catcarecenter_physical3.aspx?combinedID=21510 (263 words)

	ipedia.com: Tortoiseshell cat Article (Site not responding. Last check: 2007-10-08)
		The term tortoiseshell cat refers to a coloration pattern caused by a combination of specific genetic traits.
		It is not a specific breed of cat.
		For a cat to be calico, it must simultaneously express two genes, O and o, which are located at the same location on the X chromosome.
	www.ipedia.com /tortoiseshell_cat.html (299 words)

	Feline genetics: Black-yellow mosaic cats - Roy Robinson
		As a consequence of the sex-linked inheritance, it would be expected that all tortoiseshell cats are female.
		Or, in the particular case of the cat, it is due to a mutation from O to o.
		A proposal to register these cats as ‘red with fl spots' to distinguish them from ordinary reds and tortoiseshells is being discussed in one registry.
	ourworld.compuserve.com /homepages/L_P_swepston/mosaic.htm (1288 words)

	TVAW - Rehomed Cats (Site not responding. Last check: 2007-10-08)
		Copper is a friendly cat although a little shy with strangers and has lived with a dog as well as several cats.
		If you are looking to rescue a needy cat this might be the one for you. Danny has not received very much love and attention during the last few years being shut out of his home for hours or days at a time. Consequently, he is a rather timid cat.
		Jessie is a friendly cat but is frightened of other cats and would probably not be suitable for a family with young children.
	www.tvaw.org.uk /Adoption/rehomed_cats_list.htm (4844 words)

	Tigra Memorial - Tortoiseshell Cat Photos and Story (Site not responding. Last check: 2007-10-08)
		Traveling our neighborhood was a big tortoise-shell cat, warming herself on windowsills and sheltering in doorways, but wary of people and avoiding their contact.
		She was, in fact, the Czarina Catrina Tigranovich, who had been traveling incognito as Tigrazini, the magic cat who made food disappear.
		We've buried her in front of the cat pen, and in front of the grave of our first cat, The Baggins.
	home.att.net /~ninecats/tigrastory.htm (1184 words)

	Possum - Tortoiseshell cat - August 31, 2003
		She is a short haired tortoiseshell of unknown breed.
		She was given to a relative of ours to become a barn cat.
		She is as much his cat as mine.
	www.catoftheday.com /archive/2003/August/31.html (376 words)

	Page 7 - Cat Cloning and Other Reproductive Technologies
		CC’s genetic donor is a calico (the American term for tortoiseshell and white) domestic shorthair.
		Tortoiseshell and calico cats are almost always female, which means they have two X chromosomes.
		Unless a way can be found to undo X-linked inactivation at the embryo stage, owners wishing to clone a tortoiseshell cat will have to settle for a cat of a different color entirely.
	www.petpeoplesplace.com /resources/articles/cats/021-07.htm (442 words)

	Persian: FBRL Breed Page
		The Persian, probably the most well-known and easily recognized cat breed, is available in a wide range of colors and patterns.
		Early examples of the breed were among participants in 1871 in England and were among the first cats registered with CFA when that association began in 1909.
		The Persian is a docile, gentle, affectionate cat.
	www.breedlist.com /persian-breeders.html (533 words)

	Esther - Tortoiseshell Cat - March 27, 2005
		There was just something about this cat shaped like a cement block.
		We left and I thought about Esther all afternoon - she had been in the shelter since October, and I was afraid of what her future held.
		Esther's dislikes include her dog sister, Isabelle, cat carriers, scratches that last too long, and most anything else.
	www.catoftheday.com /archive/2005/March/27.html (144 words)

	New Page 1
		cat typically has white on its chin chest, belly and feet.
		When the hairs are blue (gray) and cream, the pattern is dilute tortoiseshell.
		A calico cat is a red and fl tortoiseshell with white patches, a dilute
	www.newulmtel.net /~poohbear/cat_id.htm (672 words)

	Poe's House Cat
		It well may be that Cattarina first belonged to Sissy and that she gave the cat to her husband as a gift, just as the drunkard's wife did in "The Black Cat," for the drunkard states, "We had birds, gold fish, a fine dog, rabbits, a small monkey, and a cat.
		Although this cat, Pluto, was entirely fl, as was the cat in "Instinct vs. Reason," Cattarina was not.
		She has been described as tortoiseshell, which is "generally a mixture of fl and orange markings, with the orange markings showing a tabby pattern" (Jay, 134).
	www.curiouschapbooks.com /Catalog_of_Curious_Chapbooks/Poe_s_House_Cat/body_poe_s_house_cat.html (1136 words)

	Kitty
		In 1977, while walking home from high school, I heard a faint mewing and found it coming from a trash can.
		Kitty was too weak to eat or drink so I dripped some milk into her mouth.
		Who was to know that Kitty would grow up to be a beautiful and intelligent cat who became my best friend for 20 years.
	www.geocities.com /happylandings/Kitty.html (213 words)

	AllRefer.com - tortoiseshell cat (Vertebrate Zoology) - Encyclopedia
		You are here : AllRefer.com > Reference > Encyclopedia > Vertebrate Zoology > tortoiseshell cat
		Topics that might be of interest to you:
		More articles from AllRefer Reference on tortoiseshell cat
	reference.allrefer.com /encyclopedia/X/X-tortshlct.html (110 words)

	tortoiseshell cat on Encyclopedia.com (Site not responding. Last check: 2007-10-08)
		Bo-Bo, a 2-year-old fl-and-orange tortoiseshell spayed female, is available for adoption at the Tri-Boro Animal Shelter in Butler.
		MY FAVOURITE THINGS; Heartbeat, ITV, Sundays, 8.30pm: Earl Grey tea, her Wizard Of Oz video and tortoiseshell tabbies are some of the things Tricia Penrose couldn't possibly live without.
		The transfer technique used was pioneered by theand this is apparently the first time a domestic cat has been cloned.
	www.encyclopedia.com /html/X/X-tortshlct.asp (397 words)

	Cat Portrait of a domestic tortoiseshell shorthair cat by Pam Reed (Site not responding. Last check: 2007-10-08)
		Cat Portrait of a domestic tortoiseshell shorthair cat by Pam Reed
		SOLD - 12"x14": A pastel enhanced watercolour painting of a much missed tortoiseshell domestic shorthair cat.
		Many more pastel enhanced watercolour paintings of pets, horses and all domestic animals can be found in the extensive fine art galleries.
	www.pamreed.btinternet.co.uk /tortoiseshell_cookie.html (49 words)

	search calico cat-The Calico Patch Gift Shop, Farmington, ME
		I owned a calico cat — on the farm I lived on until I went away to be the state auditor of Missouri...
		Cats Calico Cat [calico300] $12.49 Age 8 - Adult 300 Pieces...
		I owned a calico cat — on the farm I lived on until I went away to be the state auditor of...
	www.irancat.com /search-calico-cat.aspx (618 words)

	Tortoiseshell cats, torties, cat photos
		The interesting thing about her tan hand is that it has pink pads where the pads on her other three hands are fl.
		Now, we’re not cat breeders and we’re not coloration experts but we were interested enough to do a little digging and learn more about tortoiseshell cats.
		They are very similar but when a cat has more white than other colors, it is (probably) a calico.
	www.vegasthecat.com /tortiestorie.html (220 words)

	Calico Cat, Maryland State Cat
		Virtually all calico cats are female; a male calico is a genetic anomaly and usually sterile.
		A calico cat must be a tri-color, with its three colors in distinct patches, not mixed as in a tortoiseshell cat.
		To be a true tri-color, a calico cat's colors must be: white; red or cream; and fl, blue, chocolate, lilac, cinnamon, or fawn.
	www.mdarchives.state.md.us /msa/mdmanual/01glance/symbols/html/cat.html (244 words)

	Main Bookshop - Cat Books (Site not responding. Last check: 2007-10-08)
		A unique guide to choosing appropriate names for calico and tortoiseshell cats, interpreting their sun signs and charting their growth from kitten to fully fledged feline.
		Peter Warner's Perfect Cats is a celebration of that beauty: a gallery of pedigrees painted with all of the exquisite care for which his work is famous.
		In The Noble Cat Howard Loxton, drawing upon the expert knowledge of zoologists, ethnologists, veterinarians, breeders, show judges and pet owners, has brought together the most complete picture yet of the whole cat family so that cat lover and wildlife enthusiast alike can gain a deeper understanding of the domestic cat and its wild relations.
	www.mainbookshop.com /catbooks.htm (1784 words)

	Calico Cats
		The image of the calico cat is so pervasive, it is referred to in poetry, graces the covers of many a cat magazine, appears on numerous boxes of cat food and hangs in museums around the world.
		This random turning off of genes results in the unique patterning of the calico and tortoiseshell cat.
		This cat will have two X chromosomes and a Y chromosome, and will usually be sterile.
	www.cat-e-corner.com /calico_cats.htm (396 words)

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