Double Recessive?

[TLChris]

Im just wondering how morphs that are 2 recessive genes work. Things like Albino-Pied and Axanthic-Pied. How does 2 recessice genes show through and how would someone go about breeding one.

[StillBP]

How they show depends on what genes are involved. How to get one is simply start with a visual of each. Breed them and hold back double het offspring to breed to try for a double visual. 1/16 chance if I remember.

Sent from my XT1635-01 using Tapatalk

[Stewart_Reptiles]

First step you do single Recessive to single Recessive so for example Albino X Pied, all the offsrpings will be normal looking and carry both genes, they are called double hets (DH).

Second step you do Double Het X Double Het for 1/16 chance per egg to produce a double recessive.

So to produce an albino pied you can do the following

DH Albino Pied X DH Albino Pied

Pied Het Albino or Albino Het Pied X DH Albino Pied

Albino Het Pied X Pied Het Albino

Albino Pied X DH Albino Pied

Albino Pied X Albino Het Pied or Pied Het Albino

It will all come down to budgets, time, and odds.

[rlditmars]

Because they are recessive they won't show in the het form. They are only visual when two copies of the recessive gene exist in the same animal. Being het can influence the overall look, such as making them appear a little brighter, or in the case of het for Pied, adding the train track markings. Regardless, the animal will still look very much like whatever the base genes are. For example the picture below is a clutch of double het animals for both Pied and Hypo. The pairing was a Hypo Pied male to a Vanilla female. As you can see everything just looks like Normal or Vanilla. The recessive genes are there but since there is only one copy of each recessive gene present in every snake, nothing visual is displayed. I wouldn't normally breed siblings together, but if I did, I should get some animals that display one or both of the visual forms of the recessive genes. The second picture is the male and what could come from pairing the siblings.

I hope that helps.

[TLChris]

thanks a bunch. That helps a lot.