I feel stupid having to ask this....

[EverEvolvingExotics]

Inbreeding is what got us so many morphs! Most morphs came from one wild caught morph in Africa! You will not get any visuals with this pairing, just double hets! You will need to breed brother and sister together for Snows!

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[WingedWolfPsion]

Yep, snakes appear to be very robust when it comes to the effects of inbreeding, showing no sign of issues for generations.
Most people play it safe by only inbreeding for a couple of generations before they outcross again.

I'm impatient, so I'd probably hold back all the females, and one male. I'd breed the male double het back to the mom, and keep back all the visuals.
I'd prove the visual males on a female of the other morph (if you have one), if possible.
I'd pair them with the double-hets when the double-het females are of age, to increase my odds. If a snow isn't produced, I should have at least confirmed which of the visuals are carrying the right gene, which increases the odds for the next year.
It doesn't increase the over-all odds of snows the FIRST year, but it increases the odds per egg in clutches where your visual males DO carry the other gene. Once you have them identified, your odds will be better the next year, too.

[Jessica Loesch]

As long as you don't do it for too many generations it isn't that bad.

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[loonunit]

Inbreeding is bad though, no?

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Most people will tell you it's okay, ball pythons are sedentary animals, so even in the wild they have small territories and inbreed naturally. Certainly it's easier and cheaper to breed the siblings, or parents to offspring. Sometimes you simply have to do it if you want to prove out a new trait...

Personally, I don't like to do it if I don't have to. I figure if we're all inbreeding these recessive traits, and most of us are, it'll eventually turn around and bite us. That may be dozens of generations away, or it may be only a few.

So if you have a clutch of double 100% het for snow, and you DON'T want to inbreed, what you want to do is hold back one or more females and sell the rest. Grow those up for a year, then buy an unrelated double het male from another breeder who's also doing a snow project with the same line of axanthic. Honestly, this isn't even all that more expensive compared to breeding siblings: the double het males are cheapity-cheap compared to the double het females.

What you really need to make, then, is that double het female (or two) (or three!).

From there it's a 1:16 chance per egg again. (So the more females-->the more clutches-->the more chances.)

[kevinb]

So okay, hold back all the girlies and get a unrelated male...sounds exactly what I was thinking. Another question, say I have 0.3 DH Snows, and out of the three clutches only one produces a snow, does that mean that female is more likely to produce a snow than the others?

[TheSnakeEye]

The best pairing would be an Albino het. Axanthic x Axanthic het. Albino... That should cut that 1/16 chance in half.

[TheSnakeEye]

So okay, hold back all the girlies and get a unrelated male...sounds exactly what I was thinking. Another question, say I have 0.3 DH Snows, and out of the three clutches only one produces a snow, does that mean that female is more likely to produce a snow than the others?

That hasn't been proven so I would so no, you just got lucky.