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Kitten colour chart:

Kittens possible are either sex unless otherwise stated

 

Sires Across:


Dams Below:

Black

Black carrying

Dilute

Blue (Dilute)

Red

Red carrying

Dilute

Cream (Dilute)

Black

Black
Black

(50% of all offspring
can carry Dilute)
Black

(all offspring will
carry Dilute)
Black Males

Tortie Females
Black Males

Tortie Females

(50% of all offspring
can carry Dilute)
Black Males

Tortie Females

(50% of all offspring
can carry Dilute)

Black carrying

Dilute

Black

(50% of all offspring
can carry Dilute)
Black

Blue

(50% of all non blue
offspring can carry
Dilute)
Black

Blue

(all non Blue offspring
will carry Dilute)
Black Males

Tortie Females

(50% of all offspring
can carry Dilute)
Black Males
Blue Males

Tortie Females
Blue Tortie Females

(50% of all offspring
can carry Dilute 25%
can be Dilute)
Black Males
Blue Males

Tortie Females
Blue Tortie Females

(all non Dilute
offspring will carry
Dilute)

Blue (Dilute)

Black

(all offspring will
carry Dilute)
Black

Blue

(all non Dilute
offspring will carry
Dilute)
Blue
Black Males

Tortie Females

(all offspring will
carry Dilute)
Black Males
Blue Males

Tortie Females
Blue Tortie Female

(all non Dilute
offspring will carry
Dilute)
Blue Males

Blue Tortie Females

General information about basic coat colour genetics

Sires Across:


Dams Below:

Black
Black carrying
Dilute
Blue (Dilute)
Red
Red carrying
Dilute
  Cream (Dilute)

Red

Red Males

Tortie Females
Red Males

Tortie Females

(50% of all offspring
can carry Dilute)
Red Males

Tortie Females

(all offspring will
carry Dilute)
Red Males

Red Females
Red Males

Red Females

(50% 0f all offspring
can  carry Dilute
Red Males

Red Females

(all offspring will
carry Dilute)

Red carrying

Dilute

Red Males

Tortie Females

(50 % of all offspring
can carry Dilute)
Red Males
Cream Males

Tortie Females
Blue Tortie Females

(50% of all non Dilute
offspring will carry
Dilute)
Red Males
Cream Males

Tortie Females
Blue Tortie Females

(all non Dilute
offspring will carry
Dilute)
Red Males

Red Females

(50% 0f all offspring
can  carry Dilute
Red Males
Cream Males

Red Females
Cream Females

(50% 0f all non dilute
offspring can  carry
Dilute)
Red Males
Cream Males

Red Females
Cream Females

(all offspring will  
carry Dilute)

Cream

(Dilute)

Red Males

Tortie Females

(all offspring will
carry Dilute)
Red Males
Cream Males

Tortie Females
Blue Tortie Female

(all non Dilute
offspring will carry
Dilute)
Cream Males

Blue Tortie Females
Red Males

Red Females

(all offspring will
carry Dilute)
Red Males
Cream Males

Red Females
Cream Females

(all offspring will  
carry Dilute)
Cream Males

Cream Females

Sires Across:


Dams Below:

Black
Black carrying
Dilute
Blue (Dilute)
Red
Red carrying Dilute
  Cream (Dilute)

Black Tortie 

Red Males
Black Males

Tortie Females
Black Females
Red Males
Black Males

Black Females
Tortie Females

(50% of all offspring
can carry Dilute)
Red Males
Black Males

Black Females
Tortie Females

(all offspring will
carry Dilute)
Red Males
Black Males

Black Females
Red Females
Tortie Females
Red Males
Black Males

Black Females
Red Females
Tortie Females

(50% of all offspring
can carry Dilute)
Red Males
Black Males

Black Females
Red Females
Tortie Females

(all offspring will
carry Dilute)

Black Tortie

carrying

Dilute

Red Males
Red Males

Tortie Females
Black Females

(50 % of all offspring
can carry Dilute)
Red Males
Cream Males
Black Males
Blue Males

Black Females
Blue Females
Tortie Females
Blue Tortie Females

(50% of all non Dilute
offspring can carry
Dilute)
Red Males
Cream Males
Black Males
Blue Males

Black Females
Blue Females
Tortie Females
Blue Tortie Females

(all offspring will
carry Dilute)
Red Males
Black Males

Red Females
Tortie Females

(50% of all offspring
can carry Dilute)
Red Males
Cream Males
Black Males
Blue Males

Red Females
Cream Females
Tortie Female
Blue Tortie Females

(50% of all offspring
can carry Dilute)
Red Males
Cream Males
Black Males
Blue Males

Red Females
Cream Females
Tortie Female
Blue Tortie Females

(all offspring will
carry Dilute)

Blue Tortie

Red Males
Black Males

Tortie Females
Black Females

(all offspring will
carry Dilute)
Red Males
Cream Males
Black Males
Blue Males

Black Females
Blue Females
Tortie Female
Blue Tortie Females

(all offspring will
carry Dilute)
Cream Males
Blue Males

Blue Females
Blue Tortie Females
Red Males
Black Males

Red Females
Tortie Females

(all offspring will
carry Dilute)
Red Males
Cream Males
Black Males
Blue Males

Red Females
Cream Females
Tortie Female
Blue Tortie Females

(all offspring will
carry Dilute)
Cream Males
Blue Males

Cream Females
Blue Tortie Females

Simple Inheritance



Named after the studies of Gregor Mendel, simple inheritance relates to a trait governed by a single gene.

In cats, the inheritance of black and blue is an example. Genes on the autosomes (the chromosomes other than the X and Y sex chromosomes) are inherited in pairs, one copy from each parent.

If a cat inherits 2 blue genes, it will be blue. If it inherits 2 black genes it will be black. If it inherits 1 black gene and 1 blue gene it will be black but can pass on the blue gene to its offspring.

The black gene is dominant - this gene will always be expressed (show up in the phenotype i.e. outward appearance) even if only 1 copy is present. The blue gene is recessive and will only be expressed if 2 copies are present.

A dominant gene is always expressed even if only one copy is inherited. A recessive gene is only expressed if two copies are inherited.

An animal where both copies of the gene are the same is homozygous for that trait. An animal where the copies are different is heterozygous for that trait.
The blue gene is recessive. It is only expressed if the cat didn't inherit a black gene. Blue cats are homozygous for the blue colour. Its genotype (genetic make-up) is the same as its phenotype unlike a black cat whose genotype can be either heterozygous or homozygous.

By convention, a dominant gene is shown in uppercase and a recessive gene is shown as the same letter, but in lowercase.

You will see from the table below that mating a blue (solid or tabby) cat to a black not carrying dilute (tabby or solid) all the resulting kittens will be black (tabby or solid) and whilst none will be blue they will ALL carry blue (dilute)

This is the same for Cream as it is the dilute of Red as Blue is simply the dilute of Black.

Black Homozygous Cat (BB) Across:

Blue Homozygous Cat (bb) Below:

B

B

b
Bb
Bb
b
Bb
Bb

You will see in the table below that mating 2 cats carrying dilute will result in 25% Black, 50% Black carrying Blue and 25% Blue kittens.

Black Heterozygous Cat (Bb) Across:

Black Heterozygous Cat (Bb) Below:

B

b
B
BB
Bb
b
Bb
bb

Coat Patterns



Tabby Patterns also have a dominant and recessive - Mackerel is Dominant and needs only one copy to express in the coat - Classic needs two copies to express in the coat. All cats carry two tabby patterns - so a Mackerel cat can carry Classic pattern but not the other way around.

Solid works like the dilute gene - you need two copies to be solid but you can have a tabby cat who carries solid.

Silver - the Inhibitor gene is again Dominant and needs a cat to have at least one copy for it to be a silver (or smoke in a solid cat) - because of this a cat cannot carry silver it must be silver to have silver offspring. A cat can however have two copies of the silver gene if both it's parents were silver there is a 25% chance that the cat is Homozygous (carries two copies) and will therefore only have silver offspring no matter what mating is done.

Red is another dominant colour as it influences the non-agouti gene. Non-agouti (solid colour) cats that also have the orange gene will turn out to look tabby. Even the solid red (red self) cat will display tabby markings, even though breeders are working to decrease the contrast between background and marking colours.

You will see below that a table showing the mating of a tortie female to a red male and how to work out the results.

Genes from Tortie Female Across:

Genes from Red Male Below:

O (Red)
o (Black)
O (red) X Chromosome
OO (Red Female)
Oo (Tortie Female)
No Gene (Y Chromosome)
O- (Red Male)
o- (Black Male)

Here you see a table with the mating of a tortie female to a black male.

Genes from Tortie Female Across:

Genes from Black Male Below:

O (Red)
o (Black)
o (black) (X Chromosome)
Oo (Tortie Female)
oo (Black Female)
No Gene (Y Chromosome)
O- (Red Male)
o- (Black Male)

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