Basic Genetics: Bicolours

non diluted colour diluted coat colour
black and white Bicolour aa B- D- oo Ss blue and white Bicolour aa B- dd oo Ss For "B-" put BB, Bb or Bbl. For "D-" put either DD or Dd.
Van aa B- D- oo SS Van aa B- dd oo SS
chocolate and white Bicolour aa b- D- oo Ss lilac and white Bicolour aa b- dd oo Ss For "b-" put bb or bbl.
Van aa b- D- oo SS Van aa b- dd oo SS
cinnamon and white Bicolour aa blbl D- oo Ss fawn and white Bicolour aa blbl dd oo Ss -
Van aa blbl D- oo SS Van aa blbl dd oo SS -
red and white Bicolour male:
D- OY Ss
female:
D- OO Ss
cream and white Bicolour male:
dd OY Ss
female:
dd OO Ss
Remember that the Orange gene colours each colour to red and is called a mimic gene. Therefore you can have for gene B the following combinations: BB, Bb, Bbl, bb, bbl, blbl.
Remember also that there is no difference between red self and red tabby. Therefore you can have for gene A the following combinations: AA, Aa, aa.
Van male:
D- OY SS
female:
D- OO SS
Van male:
dd OY SS
female:
dd OO SS
black tortie and white Bicolour aa BB D- Oo Ss
or
aa Bb D- Oo Ss
or
aa Bbl D- Oo Ss
blue tortie and white Bicolour aa dd Oo Ss
or
aa Bb dd Oo Ss
or
aa Bbl dd Oo Ss
All tortie are females.
Remember that torties have aa, if they would have Aa or AA they would be tortie tabby.
Van aa D- Oo SS
or
aa Bb D- Oo SS
or
aa Bbl D- Oo SS
Van aa dd Oo SS
or
aa Bb dd Oo SS
or
aa Bbl dd Oo SS
chocolate tortie and white Bicolour aa bb D- Oo Ss
or
aa bbl D- Oo Ss
lilac tortie and white Bicolour aa bb dd Oo Ss
or
aa bbl dd Oo Ss
Van aa bb D- Oo SS
or
aa bbl D- Oo SS
Van aa bb dd Oo SS
or
aa bbl dd Oo SS
cinnamon tortie and white Bicolour aa blbl D- Oo Ss fawn tortie and white Bicolour aa blbl dd Oo Ss
Van aa blbl D- Oo SS Van aa blbl dd Oo SS

 

Where do I find such colours like cinnamon and white ? Or cinnamon tortie and white ?

Normally you will not find cinnamon/fawn (tortie) and white in Persians or in the Semi-Longhairs. But you'll find them f.e. in the Rex, where those colours are recognized in several federations.
But recently you can find cinnamon/fawn (tortie) and white also in the Orientals, they look quite nicely. Bicoloured orientals are called Seychellois.
By nature such colours are not impossible, but they are still rare, because those colours are not recognized in many federations. That means it is only a practical reason that breeders don't breed for such colours in other breeds, because those cats won't become Champions.
All other Bicolour varieties you can find in many breeds, as in Persians and Exotic, British Shorthair, European Shorthair - in European Shorthair chocolate/lilac is mostly not recognized, as the Europeans are a so called natural breed, in Ragdolls - in Ragdolls red/cream and of course also torties and cinnamon/fawn are excluded, in Manx, in Japanese Bobtails, and so on.

[Back to gene S for Bicolour]


� European Cat Fancy 1997-1999. Please respect the Copyright. Please contact us at [email protected].
Last modified on  99-01-16

Hosted by www.Geocities.ws

1