Autosomal recessive mutation  x Autosomal recessive mutation


For this example I use blue and fallow, but you can change it in any Auto. recessive mutation. Change all the names in the pairing and outcome in the mutation you want to breed. I'm no longer use the punnett square, because it get's difficult (even for me :-)  ). But always remember when combine 2 or more Autosomal recessive mutations, you need it 2 times (1 from each parent) in the gene to express the colour.


blue x fallow (which are not split for each other!) gives:

 

  • 100% green / blue and fallow


green/ blue and fallow x green / blue and fallow gives:


  • 25% green / blue and fallow,
  • 12,5%  green/ blue,
  • 12,5 % green/ fallow,
  • 6,25% green (pure wildcolour)
  • 12,5% blue / fallow,
  • 6,25% blue,
  • 12,5%  fallow/ blue,
  • 6,25% fallow,
  • 6,25% bluefallow ( = double mutation)


So a lot of possibilities!  But visually only green, blue , fallow and bluefallow.

All these birds (except the double mutation) are "possible split" as you cannot see it, only by pairing you can find out.


bluefallow x green/ blue and fallow gives the same outcome as blue/ fallow x fallow / blue


  • 25% bluefallow
  • 25% blue / fallow
  • 25% fallow/ blue
  • 25% green/ blue and fallow


bluefallow  x fallow gives:


  • 100% fallow / blue


bluefallow x fallow / blue gives:


  • 50% fallow / blue
  • 50% bluefallow


bluefallow x bluefallow gives:


  • 100% bluefallow


blue/ fallow x fallow gives:


  • 50% green/ blue and fallow
  • 50% fallow/ blue


green/ blue x green/ fallow gives:


  • 25% green / blue fallow
  • 25% green/ blue
  • 25% green/ fallow
  • 25% green

so all possibly splits.

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