# Corn snake breed genetics

Hey hows it going? Just wanted some clarification here to like what did I miss in this genetics because what I did is almost completly off with the actual calculation.

Iâ€™m having a bit of a hard time reading your chart. People typically use a punnett square to calculate genetic odds if theyâ€™re going to do it by hand. Are you breeding a het anery, amel to another het anery, amel?

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Yes, having 2 red dots means Homozygous Amel. One gray and one red means Het Amel

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It looks like the calculator is giving you the same results as what you calculated by hand. The babies you should expect are normals 66% poss het amel and anery, amels 66% poss het anery, aneries 66% poss het amel, and snows. The odds are for each individual egg. So the odds for getting a snow is 1/16 for each egg. The odds of getting an anery or an amel will be 3/16 for each egg. The odds of getting a normal will be 9/16 for each egg. Is that what youâ€™re asking? If not, feel free to correct me.

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From what Iâ€™m seeing, you are getting the same results. I think you may be confused by results being presented in two different ways. What is it that you think differs?

One more note: Very rarely does an actual, real live clutch precisely mirror the statistical likelihoods. YMMV for sure!

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Oh thank you, I was asking because in the calculator, I put a 9 egg clutch, and it gave me 5 Pos Het Amel Het Anery, which in my chart was 4 babies in 9 eggs. Then in the calculator, 1 Amel pos het amel, in my it was 2. Same for the anery. And also in my chart I should get a Snow every 9 eggs

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Iâ€™m not a computer programmer, but if I were to guess, the difference between your result and the calculator is due to fractions. The calculator gives results as a percentage likelihood. This calculation yields some decimal results. Since obviously each egg hatches a complete animal, those fractions are rounded.

True - but only in your chart. Itâ€™s perfectly possible that you get seven snows in your clutch of nine. Itâ€™s also possible that you get none. Odds are odds, not absolutes nor requirements. Mother Nature and Mr. Murphy donâ€™t give a purple fig for our odds calculations.

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Ok then. Anyways I should better rely on the calculator aha

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Thatâ€™s what I do. I can do the calculations on paper, but the computer is a whole lot faster!
Iâ€™m curious, are you doing this pairing this season?

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Sorry for just answering now, this pairing was just a test to see if I understood genetics. Im doing something more complex in a few seasons. Objective is a Tessera Xanthic and eventually Tessera Citrine.

Sounds pretty. Iâ€™m partial to Caramel- based morphs (among other things). I am expecting a prelay shed for a first clutch soon from a likely Citrine girl het stripe. She is Xanthic Snow minimum but always had a bit of something different. This clutch will prove which she is.

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Yeah! Mystery babies!

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You are missing some outcomes. Iâ€™m trying to show you, why you are wrong with â€śone of nine is a snowâ€ť. It is in fact â€śone of sixteenâ€ť.:

= normal
= Amel
= Anery

For example you write for het Amel but you forget is a possibility, too. This sounds like itâ€™s not important, but in fact it is important. When you add all the missing outcomes, you will see 16 possibilities:

= normal, no hets
= normal het Amel (from mother)
= normal het Amel (from father)
= Amel, no hets
= normal het Anery (from mother)
= normal het Anery (from father)
= Anery, no hets
= normal het Amel, Anery (both from mother)
= normal het Amel (from father), Anery (from mother)
= normal het Amel (from mother), Anery (from father)
= normal het Amel, Anery (both from mother)
= Amel het Anery (from mother)
= Amel het Anery (from father)
= Anery het Amel (from mother)
= Anery het Amel (from father)
= Snow

So you will get: 9x normal; 3x Amel; 3x Anery; 1x Snow
All with 66% poss het Amel or Anery or both, because 2 of 3 are het and you canâ€™t see which ones are het and which not.

Cheers
Seriva

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Nice graphics, Seriva!

In the end, of course, any individual clutch can vary wildly from correctly predicted outcomes.Statistical probability is valuable for planning, and likely to happen over a large number of eggs, but itâ€™s certainly not a true template.

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Yes, and I always like to point out that the probabilities are per egg, not per clutch. So if you have a clutch of 16 eggs and you are hoping for a morph that has a 1/16 chance, youâ€™re not guaranteed to get one egg with that morph. Each egg in the clutch has a 1/16 chance to be that morph.

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That is exactly the point that most miss. Thanks!

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Oh thats so right! Thank you so much for explaining, now it makes sence

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