Reptile & Amphibian Forums

Or are they automatically 100% hets themselves? I know I should know this for sure already, and I DID. But math messes with my head. Just need verification. Thanks.

n/p

it's quite simple............

visual (simple recessive) x normal = 100% hets

100% het x 100% het = 66% hets

100% het x normal = 50% het

66% het x normal = poss. het

50% het x normal = poss. het

Pitoon

>>Or are they automatically 100% hets themselves? I know I should know this for sure already, and I DID. But math messes with my head. Just need verification. Thanks.

You should produce some visuals out of that pairing. Any animal that is not a visual would be 100% het.

Assuming a simple recessive mutation, of course.

Rob

Yeah. I was thinking if you breed a visual to a normal, you get all hets. So breeding to a het must make the non-visual offspring 100% hets. Just needed clarification. Thanks.

Anyway, now I have a line breeding inquiry. I bred my female to her son and I'm seeing that she appears to have proven out as recessive. Would it be smart to breed another of her offspring back to her again (her own grandson), or should I begin outcrossing now? What's the possibility that with that shallow of a gene pool, I'd just be wasting my time cause the babies will turn out buck toothed, slack jawed, and jammin the latest Toby Keith album?

:

So you would not produce any visuals out of 100% het X 100% het?

Nat

What I should have asked is......what would be a good book to read to understand ball python genetics?
Any recommendations?

If you want to learn genetics, Genetics for Herpers, by Pritzel, is good for the basics. Schaum's Outline of Genetics, by Elrod, is a good, inexpensive, all-purpose genetics text. These cover the principles of genetics which can then be applied to the genetics of ball pythons. Then get the Barkers' ball python book or McCurley's ball python book for the mutants and combinations.

Paul Hollander
Genetics for Herpers

You might or you might not.

Breeding 100% het simple recessive to 100% het simple recessive will give you a 1 in 4 chance of producing a visual homozygous morph PER EGG. You get the same odds with each egg in the clutch, the more eggs you have the higher your chances of hatching at least one visual, but there's never a guarantee.

Vic

25% visual
50% het
25% normal
since only 2 out of the 3 will be het that is why the 3 will be call 66%het.

In a visual x 100% het you won't get any 66% het offspring at all.

Each egg in the clutch will have a 50% chance to be the visual morph (if a recessive morph and the 100% het is for the same recessive morph). If it isn't the visual morph, then it will be a 100% het for that morph.

Some good online sources for basics of reptile genetics, check the following sites:

www.newenglandreptile.com/genetics_intro.html

www.vmsherp.com/LCGenetics101.htm (a more detailed genetic site)
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PHLdyPayne

I've looked at both of those web sites. On a scale of one to ten, with one the highest rating, these are around eight, which makes them average to above average herper genetics sites.

Paul Hollander