Soo how does this work I dont get it?!

Alright so I have been sitting here and thinking about a Het Albino BP
I am very confused I just looked at this site http://ballpythons.ca/what_get/recessive.html
and I am confused about this percentage stuff 50% and 66% hets I figured out that you cant tell between a Het and a normal so how does this all work out? So I could breed a 66% het and a 50% het and only get hets or will I still get a chance of getting an Albino? This percentage is confusing me if anyone can straighten this out for me I would greatly appreciate it. Because to me getting a Het Albino just seems like a gamble.

:snake: + :snake: = :taz: lol im soo bored

I have three 100% het males (hypo, pied, clown). I probably at this point plan to pick up a 100% het hypo female and a 100% het pied female.

For example, when I breed the two 100% het pieds together, each egg has a 25% probability of being pied, 25% probability of being a normal and a 50% probability of being a het.

Assuming a 4 egg clutch, statistically, 1 would be pied and of the three remaining normal appearing offspring, 2 (or 66%) of the remaining three could be het - so all three have a 66% shot of being het. You won't know which ones would be normal and which would be het - so you'd have to raise them to breeding weight to prove them out by either breeding the females back to dad, or to a visible pied.

Now with my het clown - I plan to breed him to a normal female and keeping all his female offspring. Each of them have a 50% shot of actually being het - so I'd raise them all up and breed them back to Dad to try to proove them out (producing a visible clown as a result).

Remember too, that sometimes they don't prove out in their first season, and could still be het, so you'd need to breed them at least one more time before concluding that they are het or normal. Even IF none of them proved out - you know have breedable weight females - who are valuable in any breeder's collection! :D

Bottom line - choose a breeder who you trust when purchasing hets. Always check out a breeder on Fauna BOI if you're not familiar with them.

100% het for "whatever": means that all the eggs in that clutch have a 100% chance of carrying one copy of a gene.

66% het (a.k.a poss het): means that each egg has a 66% chance of being het. Works like this (this is only to show odds and not to show what you will get.
100% het pied + 100% het pied = 4 eggs. egg 1 will be pied; egg 2 and 3 will be het pied; egg 4 will be normal. As robin said the only way to tell the 66%'s from the normal is to grow them up and breed them to a visual for the same morph or to another 100% het. Even then with the odds you still might miss and have to try next year.

50% het: is from a 100% het to a normal breeding.

they posted great answers, but the easiest answer is that it's not the percent of genes in each individual snake, it's the percentage of the genes expressed in a clutch, like what your chances are of that animal carrying the genes you want it to.
And the hard part for most is that this is based on Mendelian genetics and the punnet square which many people can't figure out.

ah alrite makes a bit more sense lol numbers can be very confusing sometimes especially at 4 in the morning :) Thanks I really appreciate the feedback I have been talking to a couple of breeders and will be buying from them soon but right now I am just looking for some normal females or male jungle pastels I hear Graziani is the guy to buy from for the pastel. But I will be buying from Lawrence at Superior Serpents first :) this is soo crazy I never thought I would get addicted to snakes.. well BP's in general hopefully by next year I will start breeding slowly.

Ok heres a possibly stupid question.

If I breed two albinos together or two axanthics together, whats my chance of getting axanthics/normals and Albino/normals

You would get all albionos/axanthics.
http://ballpythons.ca/images/what_ge...ecessive_b.jpg

Quote:

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Originally Posted by Freakie_frog

100% het for "whatever": means that all the eggs in that clutch have a 100% chance of carrying one copy of a gene.

66% het (a.k.a poss het): means that each egg has a 66% chance of being het. Works like this (this is only to show odds and not to show what you will get.

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This is incorrect. 100% het for "whatever" means that the animal in question has a 100% probability of carrying one copy of the gene. The eggs have a 50% probability of getting the gene.

A 66% het animal, or more correctly a 66% probable het means that the animal in question has a 66% probability of being a het. If it is a het, then the eggs have a 50% probability of getting the gene, if it isn't, well, the eggs have a ZERO% probability of getting the gene.

Quote:

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Originally Posted by Freakie_frog

100% het pied + 100% het pied = 4 eggs. egg 1 will be pied; egg 2 and 3 will be het pied; egg 4 will be normal. As robin said the only way to tell the 66%'s from the normal is to grow them up and breed them to a visual for the same morph or to another 100% het. Even then with the odds you still might miss and have to try next year.

50% het: is from a 100% het to a normal breeding.

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The second part is correct.

Steve

A lot of people aren't fans of the all-knowing Punnett Square (http://en.wikipedia.org/wiki/Punnett_square), but I think in this case a simple square can answer the question quite concisely, no? Check out the wikipedia link and assume that the dominant allele is "A" and that the recessive is "a". A genotype of "aa" is necessary to produce an albino ball. AA is a normal and Ab is heterozygous.

Keep in mind Punnet Squares won't tell you how the trait in question will be expressed physically. They also may not work when 2 alleles are co-dominant.

Just another visual. Hope it helps.


DISCLAIMER: I'm not a geneticist or BP breeder. This is just the stuff I remember from my highschool genetics class. Also, I'm not 110% sure albinism is recessive in BPs.