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i understand how a snake can be 50% or 66% possible het, but is there a combination of sire and dam that will produce 33% possible het? i'm trying to figure out how a ball python can be 33% possible het for albinism. thanks.

Only way I can think of is for one parent to be normal and the other to be 66% probability possible heterozygous. FWIW, I would not pay more for these than for a normal. YMMV.

Paul Hollander

There is only a 66% or 50% possibilty for an animal to be Het. for a SINGLE trait. By combining multiple traits, one can come up w/ different numbers by using a punnett square to determine the odds. For example, an animal that is 50% PH for Albino & 50% PH for Axanthic has a 25% chance at being Het. for being het. for both traits or "25% PDH Snow" - produced by breeding Dbl. Het. to a normal. An animal that is 66% PH for Albino AND 50% PH for Axanthic will be 38% PDH for SNOW - produced by breeding Dbl. Het. to Het. 66% PH for ea. trait will be 44% PDH for SNOW - produced by breeding Dbl. Het. to Dbl. Het.

np

Are you saying if you breed a 66% PH animal to a normal, the offspring are also 66% PH? If so, that is incorrect. The animal is either Het. or it isn't. The offspring will all be PHs w/ NO PERCENTAGES. If the (66% PH) animal is Het. for Albino, the offspring from such a breeding are all 50% PHs. If the (66% PH) animal is not a Het., the offspring are all NORMALS - not 33% or 66% PHs.

>>Are you saying if you breed a 66% PH animal to a normal, the offspring are also 66% PH? If so, that is incorrect. The animal is either Het. or it isn't. The offspring will all be PHs w/ NO PERCENTAGES. If the (66% PH) animal is Het. for Albino, the offspring from such a breeding are all 50% PHs. If the (66% PH) animal is not a Het., the offspring are all NORMALS - not 33% or 66% PHs.

Michael,

Can i offer a diff perspective? I think it's the same one paul refers to above.

If a 66% chance is bred x a normal, there are 2 possible outcomes, but because it's a 2/3 chance, in every 3 cases one of the poss outcomes occurs twice and the other outcome occurs once. So for every 3 occurrences, the three possibilities are:
1) it IS het so 50% of babies are hets (happens 1/3 of the time)
2) it IS het so 50% of babies are hets " ditto
3) it's NOT het so 0% of babies are hets " "

I think this works out to there being 33% possiblity a given baby is a het. It's a "chance of chance" but it's consistent with probability theory, i think. Your analysis above is correct, i think you just stop short when you conclude "no percentages." Does that make any sense?

terry

If you had a 100% het bred to a normal what would the offspring be? 50% right? Why?100/2.Same principal for 33%.Terry,I looked on your site and didnt see any albino chain kings,are you cooking any of those eggs this year?Get back to me,I need a male,Jeff

thanx for clearing that up. That is a new one by me.......

Jeff,

You really need a male albino chain king don't you? What's this little project for? I can find you one ya know, somewhere for sale, I'm gonna need you to get me slimy salamanders though for my help.
Michael
Michael's Place

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but would like to understand where you guys are coming from.

If a 66% chance is bred x a normal, there are 2 possible outcomes, but because it's a 2/3 chance, in every 3 cases one of the poss outcomes occurs twice and the other outcome occurs once. So for every 3 occurrences, the three possibilities are:
1) it IS het so 50% of babies are hets (happens 1/3 of the time)
2) it IS het so 50% of babies are hets " ditto
3) it's NOT het so 0% of babies are hets " "

I think this works out to there being 33% possiblity a given baby is a het.

Wouldn't that work out to there being 66% possibility a give baby is a het - since it is 2/3?

if you breed a normal female to three males, one albino and two normals, and the female has a clutch, then the babies are 33% possible het...
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Nic
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