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It is important for anyone who wants to breed cats to know the basics of genetics. Only then can a breeder understand what kinds of kittens can be born from different parents. Although this may not be very interesting reading for a layperson, it does not make it any less important. To experts I apologise for my lay explanation, which is sometimes not entirely accurate in my attempt to simplify things.
The variety cannot be influenced by the sex of the cat, which is why I use the general term – parents.
THE RAGDOLL CAT AND ITS VARIETIES from a genetic point of view are:
Colorpoint (cp): genetic code: ss (without white)
Mitted, Mitted with blaze: genetic code S2s (white socks and stockings, white chin and belly. The blaze is the white “flame” in the middle of the nose)
High Mitted (HM): genetic code S2S2 (phenotypically bicolor, i.e. white inverted V in the mask, white legs and belly from chin to base of tail, back in point colour)
Bicolor: genetic code S4s (so-called true bicolor, visually the same as High Mitted)
Bicolor Mid High White (MHW): genetic code S4S2 (bicolor with a higher proportion of white)
Bicolor High White (HW, Van) genetic code S4S4 (bicolor with the highest proportion of white)
For a detailed overview of variety combinations, see for example HERE
Brief overview of variety combinations
Colorpoint x Colorpoint = Colorpoint (from parents who are both colorpoints all kittens will also be colorpoints)
Colorpoint x Mitted = Colorpoint, Mitted (if one parent is colorpoint and the other mitted, the kittens can be mitted or colorpoint)
Colorpoint x Bicolor High Mitted = Mitted (parents colorpoint and Bicolor High Mitted can have only mitted kittens)
Colorpoint x Bicolor (true) = Colorpoint, Bicolor (if one parent is a true bicolor and the other a colorpoint, the kittens will be colorpoints and bicolors)
Colorpoint x Bicolor Mid High White = Mitted, Bicolor (if one parent is Bicolor Mid High White and the other a colorpoint, the kittens will be bicolors and mitteds)
Colorpoint x Bicolor High White (Van) = Bicolor (if one parent is Bicolor High White and the other a colorpoint, all kittens will be true bicolors)
Mitted x Mitted = Colorpoint, Mitted, High Mitted (if both parents are mitted, their kittens can be colorpoint, mitted or High Mitted)
Mitted x High Mitted = Mitted, High Mitted (parents mitted and High Mitted can have mitted and High Mitted kittens)
High Mitted x High Mitted = High Mitted (parents High Mitted and High Mitted can have only High Mitted kittens)
Mitted x Bicolor true = Colorpoint, Mitted, Bicolor true, Bicolor Mid High White (parents mitted and true bicolor can have colorpoint, mitted, true bicolor and Bicolor Mid High White kittens)>
Mitted x Bicolor Mid High White = Mitted, High Mitted, Bicolor true, Bicolor Mid High White (parents mitted and Bicolor Mid High White can have mitted, High Mitted, true bicolor and Bicolor Mid High White kittens)
Mitted x Bicolor High White (Van) = Bicolor true, Bicolor Mid High White (parents mitted and Bicolor Van can have true bicolor and Bicolor Mid High White kittens)
Bicolor true x Bicolor true = Colorpoint, Bicolor true, Bicolor High White (two true bicolor parents can have colorpoint, true bicolor and Bicolor High White kittens)
Bicolor true x Bicolor Mid High White = Mitted, Bicolor true, Bicolor Mid High White, Bicolor High White (parents true bicolor and Bicolor Mid High White can have mitted, true bicolor, Bicolor Mid High White and Bicolor High White kittens)
Bicolor true x Bicolor High White = Bicolor true, Bicolor High White (parents true bicolor and Bicolor High White can have true bicolor and Bicolor High White kittens)
THE RAGDOLL CAT AND ITS COLOURS from a genetic point of view are:
For the genetic codes of the basic colours, the following terms and designations are used:
the letter B stands for seal coat colour
the letter b stands for chocolate coat colour
the letter D stands for full colour (i.e. without dilution of colour)
the letter d stands for diluted colour (dilute gene)
In ragdoll cats we distinguish the following basic colours:
Seal (black) the genetic codes of a seal Ragdoll cat depend on whether it is a seal Ragdoll without a dilution gene = BBDD, or a classic seal with a dilution gene = BBDd, or a seal with a gene for chocolate colouring = BbDD (carrier of chocolate), or a seal with a gene for chocolate colouring and a dilution gene = BbDd (carrier of chocolate and the dilution gene)
Blue the genetic code of a blue cat must always contain two dilution genes dd and either two seal genes BB (the genetic code is then BBdd), or it may have one seal gene and one chocolate gene Bb and the cat is then a carrier of chocolate (the genetic code of such a blue cat is Bbdd)
Chocolate a chocolate cat must always have two chocolate genes bb and in addition either DD, which means that it does not have the dilution gene (the genetic code of such a cat is bbDD), or it may have Dd and therefore carries the dilution gene (the genetic code of such a cat is bbDd).
Lilac overseas the name Frost is sometimes used. The genetic code of a lilac cat is always bbdd and never anything else. It therefore has two chocolate genes and a dilution gene paired with each of them.
A detailed overview of basic colour combinations can be found at:
colour combinations