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There is no way to tell. Cat genetics is complicated, and I don't know all the rules of inheritance involved, but there are multiple ways that a litter can produce both a black kitten and a tortie kitten. A cat is tortoiseshell as the result of two color genes (or alleles) found in the same locus on the X chromosome. One allele modifies fur color, changing the base color to orange or cream, and the other allele does not modify fur color. Both alleles are expressed in the coat, so that some patches are modified to red or cream and other patches retain the base color, which gives rise to the typical tortoiseshell coat. So a tortie must have one of each type of orange allelle - one that will change the base color and one that won't. One of these came from her mom and the other from her dad. A tortie will almost always be female, since males only have one X chromosome and will only have one version of the orange allele. Since her brother is black it seems likely that your tortie is the black/orange variety. If so, possible combinations of parents would be: Orange male and black female, or black male and orange female, or orange male and black/orange female, or black male and black/orange female. So far so good, but her parents may have had color genes that were not passed on to either her or her brother. For example, one parent may have had the dilution gene, changing a black fur color to blue (grey). So her parents could also have been orange male and blue female, blue male and orange female, orange male and blue/cream female, black male and blue/cream female, cream male and black female, black male and cream female. And if you add other possibilites that the kittens may not have inherited, then the picture gets even more complex. Maybe someone with better understanding of cat genetics could clarify this.

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Q: What did the parents of a female tortoiseshell cat and her brother a black short hair look like?
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An orange cat is mated with a black cat in hopes of producing a tortoiseshell cat is it sexual or asexual reproduction?

sexual If the male is black but carries dilute, and female is red, then you could get red or cream boys and tortoiseshell or blue/cream girls. If the sire doesn't carry dilute you would get red boys and tortie girls. If it's the other way round and the male is red, and female black, then you will get black boys and tortie girls. Either which way, looks like you should get a tortoiseshell!


Are tortoiseshell cats female or male?

A tortoiseshell cat is a coat color where the cat is a molted brown cat with black, reddish, or orange patches. They can also have white paws. Tortoiseshell cats have unique genetics. The vast majority of tortoiseshell cats are female, because two X chromosomes are required to produce black, gold and orange coloring. Male cats only have one X and one Y chromosome, so technically it's genetically almost impossible for a male to inherit the tortoiseshell coloring. A male tortoiseshell has an extra X chromosome, making it an XXY. According to a study by the College of Veterinary Medicine at the University of Missouri, only 1 in 3000 tortoiseshell cats is male.


Where are tortoiseshell cats from?

Tortoiseshell describes a coat coloring found in cats. Cats of this color are mottled, with patches of red and black, chocolate, or cinnamon. They are sometimes called tortiesfor short. The term "tortoiseshell" (also called calimancoor clouded tiger in North America) is typically reserved for cats with brindled coats that have relatively few or no white markings. Those that are largely white with red and black patches (rather than a brindled aspect) are described as tortoiseshell-and-white (in the United Kingdom) or calico (in the United States). Tortoiseshells and calicos are not specific breeds of cat. The tortoiseshell markings appear in many different breeds.[1] This pattern is especially preferred in the Japanese Bobtail breed. Both calico and tortoiseshell cats are almost always female


Does a cat's coloring indicate gender?

Sort of. A Calico cat is almost always (99.9% of the time) going to be female. The reason is that the female has two X genes, one has to carry red and the other black to get the 3 color effect. For a male to be a calico, it has to have XXY and is normally sterile.


How rare is a torby cat?

dont you mean tortioseshell its only rare for male not really for female but its hard to produce and you cant clone it because it wont be the colours of a tortioseshell a tortioseshell is black and orange sometimes white when it is an adult

Related questions

What colour will the kittens be if a blue male mates with a tortoiseshell female?

The males could be red or black, and the females could be tortoiseshell or black. If the mother is carrying dilute, the males could be cream or blue, and the females could be blue-cream or blue.


An orange cat is mated with a black cat in hopes of producing a tortoiseshell cat is it sexual or asexual reproduction?

sexual If the male is black but carries dilute, and female is red, then you could get red or cream boys and tortoiseshell or blue/cream girls. If the sire doesn't carry dilute you would get red boys and tortie girls. If it's the other way round and the male is red, and female black, then you will get black boys and tortie girls. Either which way, looks like you should get a tortoiseshell!


Are tortoiseshell cats female or male?

A tortoiseshell cat is a coat color where the cat is a molted brown cat with black, reddish, or orange patches. They can also have white paws. Tortoiseshell cats have unique genetics. The vast majority of tortoiseshell cats are female, because two X chromosomes are required to produce black, gold and orange coloring. Male cats only have one X and one Y chromosome, so technically it's genetically almost impossible for a male to inherit the tortoiseshell coloring. A male tortoiseshell has an extra X chromosome, making it an XXY. According to a study by the College of Veterinary Medicine at the University of Missouri, only 1 in 3000 tortoiseshell cats is male.


Was Redtail a tortoiseshell?

No, Redtail was a ginger tomcat with a distinctive red tail. Tortoiseshell cats have a coat pattern with a mix of black and orange colors.


What is a cat which is black orange AND CREAM called?

Tortoiseshell


Where are tortoiseshell cats from?

Tortoiseshell describes a coat coloring found in cats. Cats of this color are mottled, with patches of red and black, chocolate, or cinnamon. They are sometimes called tortiesfor short. The term "tortoiseshell" (also called calimancoor clouded tiger in North America) is typically reserved for cats with brindled coats that have relatively few or no white markings. Those that are largely white with red and black patches (rather than a brindled aspect) are described as tortoiseshell-and-white (in the United Kingdom) or calico (in the United States). Tortoiseshells and calicos are not specific breeds of cat. The tortoiseshell markings appear in many different breeds.[1] This pattern is especially preferred in the Japanese Bobtail breed. Both calico and tortoiseshell cats are almost always female


What is a cat that's colored black orange nd cream called?

Tortoiseshell


What breed of cats are orange and black with a black mask?

Hi there...you may be describing a Tortoiseshell Calico cat. Their patterns vary, but generally have the colouration you describe. Here are some photos of Tortoiseshell Calico cats: http://images.google.com/images?hl=en&q=tortoiseshell+calico&btnG=Search+Images&gbv=2


Is there such thing as a tortishell cat?

Narmoush says:A definition:Tortie Ultra (Contemporary) Persian Cat called "Princess". So this means they actually Persian but with a different type of fur print on their back 'the shell of a TORTOISE'Tortoiseshells come in many colors: Black tortoiseshells.Chocolate tortoiseshell.Blue [gray] tortoiseshell.Seal tortoiseshell.White tortoiseshell.Now to get to my point...Are they rare?Yes,A lot of us know that tortoiseshell cats are always female, with rare exceptions.Why is this?Females have two X chromosomes. If a particular female cat is destined to be a tortie she will have received from her parents an X (Eumelanin) chromosome from one parent and an X chromosome (phaeomelanin) from the other. Each cell can have one X Chromosome activated. A factor in the creation of the tortoiseshell coat is controlled by X Chromosome Inactivation. This process only takes place where there are two X Chromosomes; hence only females are tortoiseshell cats. As the cells divide and multiply patches of the two different types of pigment are created.About 1 in 3,000 tortoiseshell cats are male


What type of cat is black and brown with white hairs you can't see good?

If it's a FEMALE it's a tortie c: Also known as a tortoiseshell it's almost like a calico but with less white.


Where are Cat from?

Tortoiseshell describes a coat coloring found in cats. Cats of this color are mottled, with patches of red and black, chocolate, or cinnamon. They are sometimes called tortiesfor short. The term "tortoiseshell" (also called calimancoor clouded tiger in North America) is typically reserved for cats with brindled coats that have relatively few or no white markings. Those that are largely white with red and black patches (rather than a brindled aspect) are described as tortoiseshell-and-white (in the United Kingdom) or calico (in the United States). Tortoiseshells and calicos are not specific breeds of cat. The tortoiseshell markings appear in many different breeds.[1] This pattern is especially preferred in the Japanese Bobtail breed. Both calico and tortoiseshell cats are almost always female


How do you know if your cat is a calico or a tortoiseshell?

A tabby has stripes on its forehead usually that look sort of like an M. Look at pics closely and you can see it!! :) That's my own way of telling its either all tabby or part tabby. A tortishell cat has not patches but brindled brown and black fur. A Calico which people confuse for Tortishells has Brown , Black and white fur that's patched. :) --- A normal tabby cat has no ginger in its fur, which is the definition of a tortoiseshell. Cats can also be torbies, which is a tortoiseshell-tabby. In this pattern, the cat has ginger patches, and you will see tabby markings on the face and body where there is no ginger. In a tortoiseshell, the ginger patches always have tabby markings whether the cat is a tabby or not.