Kaninchen Farm

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Silver Fox Genetics

Genetics can seem overwhelming to some people, but with Silver Fox, it's really pretty simple. There are 3 main genes to work with. B, C, and D. 


B Gene

The B gene controls for Black (B) or brown (b). Just like how you can draw a B over a little b to hide it, B (Black), hides b (brown). You can never hide a big letter, by drawing a little letter over it. Brown cannot hide Black. If a rabbit has a B, it will be Black, but could possibly carry a hidden brown. 
BB = Black

Bb = Black, carries brown

bb = brown



C Gene

Most Silver Foxes will be CC. Think of C as being the gene for full Color (C), or no color (c). Big C can hide little c, but little c cannot hide big C. Little c is also called albino because of the complete lack of color. This produces white rabbits with red eyes (red- or ruby-eyed whites aka REW).

CC = full color

Cc = full color, carries white

cc = white
cc overpowers all other colors. It doesn't matter what the B or D gene says, if it's got cc, it will be white.


D Gene

The D gene is a color modifier and controls for Dense (d) or dilute (d) color. D can hide little d, but not the other way around. Dense colors are black and chocolate. Dilute colors are the lighter colors of blue (Black) and lilac (brown). 
DD = Dense, will show as B gene color (Black or brown)

Dd = Dense, carries dilute
dd = dilute, will show as a dilute B gene color (blue or lilac).

B_ C_ D_ = black rabbit      B_ C_ dd = blue rabbit

bb C_ D_ = brown rabbit     bb C_ dd = lilac rabbit

__ cc __ = white rabbit


Sometimes you will see a pedigree with B_ C_ D_. The underscores (_), mean that the second gene is not known. The only way to fill this in is by test breeding. 


Kit Genetics

The dam (mom), gives 1 copy of each of her genes to her kits. It's not always the same (one kit can get a B, while another gets a b), but each kit gets one from the dam and one from the sire. It does this for all the genes (B, C, and D). 


In this picture, the dam is Bb, and the sire is Bb. The parents go on the side, and what you get in the squares is the possibilities for the kits. You can get BB (black), Bb (black carries chocolate), and bb (chocolate).

You can apply this for all the genes, B, C, and D to see what you may get. If you're not sure if a baby carries chocolate (or dilute), just leave an _ next to the known gene. 

Examples

Blue rabbit to blue rabbit   B_ dd x B_ dd

Each parent can only give a dilute (d), so whatever color you get from the B gene (known Black, but unknown second gene), will be a dilute. You will only get blue rabbits or lilac rabbits (if both parents are carrying chocolate).


Chocolate rabbit to chocolate rabbit   bb D_ x bb D_
Each parent can only give chocolate (b), so whatever color you get will be chocolate based. You can get either chocolate rabbits or lilac rabbits (if both parents are carrying a dilute).


The black color grab bag rabbits   Bb Dd x Bb Dd

Since each parent can give B or b, you can get either black or chocolate. Since each parent can give D or d, you can get dense or dilute. From this pairing, you will get black, blue, chocolate, and lilac.


White rabbit to any non-white rabbit  __ cc __ x __ CC __
White hides everything, so there's no way to tell what you'll get without knowing the genes of the white rabbit's dam and sire. Each kit will have a c, so they carry white and can pass it on.