Reptile & Amphibian Forums

hello,

statistically speaking....

for this example, say i have a 100% het bp and a 50% poss het bp that proves out. if i were to breed them to a similar mate, would they produce the same percent of what they were het for? follow me?

if the possible proved out, would it produce the same percent of offspring as a 100% het?

just curious for future reference. thanks!

jonathan

Lets just say you have het for pied... If your 50% het pied proves out that means you have a 100% pied in your hands...

So your breeding would be... Het pied X het pied.....

So your should get (theoretically)

25% pied
50% het pied
25% normal

BUT since you can't tell the difference between normals and hets you would get..

Out of 4 eggs

1 pied
3 66% het pieds
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Joe
myspace.com/droogiejoe
working with ghosts, lessers, pastels, spiders, and mojaves

yeah your het is either a het or its not the percentage is the chance of it being a het from the parents that where bred

Yes and know if I understand your question correctly. Basically once the poss het is proven out then its not longer a poss het. So you'd have 2 100% hets at that point and they would have the exact same odds. Here's the no part that doesn't mean they will both produce 1 in 4 homozygous. It means that each egg would have a 25% shot at being homozygous. In theory the first year one could produce all homozygous and the other none, then vice versa the next.
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www.seeversreptiles.com
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1.1 Spider Ball Python
1.0 Albino Ball Python
0.1 Pastel Ball Python
0.3 Het for Albino Ball Python
0.1 Pinstripe Ball Python
0.1 Bumble Bee Ball Python
1.0 Hypo Ball Python
1.0 Lesser Ball Python
0.1 Mojave Ball Python
0.2 Het for Piebald Ball Python
0.2 Normal Ball Python
0.2 Het for Axanthic Ball Python
0.1 Axanthic Ball Python
1.0 Piebald

Seeves makes a great point here: The "clutch" percentages you see people post are chances of producing a morph PER EGG.

So, as you have suggested, breeding a 100% Het pied to a 100% Het pied, you would have:

25% Pied

50% Het Pied (These individuals would be called 66% Het pied because there is a 66% chance they are carrying the Pied gene)

25% Normal (Normals and Het Pieds would be indistinguishable from one another)

These percent chances are PER EGG. More eggs, less eggs, doesn't matter. You could get a clutch of all Pieds, all normals, etc.
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26 year old 0.1 from Lincoln, NE
Ball Pythons - 0.1 Silver Bullet, 0.1 Pastel, 1.0 Pastel het Pied, 0.1 Pied, 0.1 Cinn, 1.0 Black Pewter, 1.0 Woma, 0.1 Yellowbelly, 2.1 Normals
Kingsnakes - 1.0 L. m. thayeri, 0.1 L. m. thayeri X L. alterna, 1.0 L. g. californiae
Other - 0.1 Whitesided P. catenifer sayi, 1.0 H. nascicus, ?.? Chrysemys picta, 1.0 husband, ?.? Mini-human

If you breed two het pieds and get a four egg clutch, you EXPECT one pied, two normal looking hets, and one normal. What you actually get may or may not be what you expect.

Here is a do it yourself analogy. Hunt up dice from some game. Take one die. It's great if the die has only four sides, but six-sided dice are much more common. Roll the die four times. Each roll corresponds to one egg from a four egg clutch. Results for a six-sided die are as follows:
1 = pied
2 = het
3 = het
4 = normal
5 = no result, roll again
6 = no result, roll again

Record the results from those four rolls. Then repeat 9 more times to represent 10 clutches, each of which has four eggs. Is every clutch the same as the expected clutch? I would bet money on not the same, and I'm so tight I squeak.

that's just the info i was looking for. thanks!!!

i am actually working with a visual axanthic 100% het albino female and going to cross her with another project. was wondering the percentages for the hatchling genetics.

i will "roll the dice" and see if i can score on some nice snakes on the next generation

thanks!
jonathan

Remember axanthics and albinos are both recessive. When you breed them together your going to get all normal looking snakes.

Your odds on that with an Axanthic and 100% Het for Albino:
100% Het for Axanthic
50% Het for Albino

Since you wouldn't be able to tell what was what that would make every snake out of that clutch 100% het for Axanthic 50% het for snow. Breeding is fun and fulfilling now matter what your goals our. If the end goal is snows there are better ways to get there. It would help the know the gender of the three and what the third morph is.
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www.seeversreptiles.com
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1.1 Spider Ball Python
1.0 Albino Ball Python
0.1 Pastel Ball Python
0.3 Het for Albino Ball Python
0.1 Pinstripe Ball Python
0.1 Bumble Bee Ball Python
1.0 Hypo Ball Python
1.0 Lesser Ball Python
0.1 Mojave Ball Python
0.2 Het for Piebald Ball Python
0.2 Normal Ball Python
0.2 Het for Axanthic Ball Python
0.1 Axanthic Ball Python
1.0 Piebald

Actually, the results of a cross between a Het Albino and a Het Axanthic are:
25% 1/4 Normal
25% 1/4 Het Axanthic
25% 1/4 Het Albino
25% 1/4 Het Albino-Het Axanthic (Het Snow)
But since both Axanthics and Albinos are recessive traits, the whole clutch will end up looking Normal

If you have an Axanthic Het Albino and cross it with another Albino you'll get:
50% 1/2 Het Albino Het Axanthic (looks Normal)
50% 1/2 Albino-Het Axanthic

If the cross is an Axanthic Het Albino x Axanthic, the result will be:
50% 1/2 Axanthic
50% 1/2 Axanthic Het. Albino

If the cross os Axnathic Het Albino x Axanthic Het Albino, then the result will be:
25% 1/4 Axanthic
50% 2/4 Axanthic Het Albino
25% 1/4 Snow (Axanthic-Albino)
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Sed et serpens erat callidior cunctis animantibus terrae quae fecerat Dominus Deus...

Sorry I thought he said visual axanthic
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www.seeversreptiles.com
----------------------------------------------------------------
1.1 Spider Ball Python
1.0 Albino Ball Python
0.1 Pastel Ball Python
0.3 Het for Albino Ball Python
0.1 Pinstripe Ball Python
0.1 Bumble Bee Ball Python
1.0 Hypo Ball Python
1.0 Lesser Ball Python
0.1 Mojave Ball Python
0.2 Het for Piebald Ball Python
0.2 Normal Ball Python
0.2 Het for Axanthic Ball Python
0.1 Axanthic Ball Python
1.0 Piebald