Reptile & Amphibian Forums

if i breed a bloodred het snow to a bloodred het snow, what will the babies be? and what % of each would i get saying i got 20 eggs........thanks .....boadave

9/16 Bloodred 66% poss.het. Anerythristic 66% poss.het. Amelanistic
3/16 Anerythristic Bloodred 66% poss.het. Amelanistic
3/16 Bloodred Amelanistic 66% poss.het. Anerythristic
1/16 Anerythristic Bloodred Amelanistic

sorry, thats the only program that works with a mac, apple computer... hopefully someone with windows can help you further .... but i tried...
~kin
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~Sober Serpents~
www.freewebs.com/soberserpents
Corns, Creamsicles, A Black Rat, Thayeri, Cal Kings, A Jungle Corn(Just A Pet), A Ball Python, A Bearded dragon, Leopard Geckos, Green Anoles, a Snapping turtle, and a white cheeked mud turtle

All of the young will be homozygous bloodred.

Snow is not a single gene so "het snow" is incorrect terminology, but I assume it means double het - for anery and amel.

If that is the case -

9/16 young bloodred 67% het anery 67% het amel
3/16 young fire 67% het anery (fire is amel bloodred)
3/16 young granite 67% het amel (granite is anery bloodred)
1/16 young will be tripple morph - anery amel bloodred. Not sure if it has a morph name, I would call it a diffuse snow.

Note that those are predicted outcomes, you miss predicted more often than you hit predicted (as is the case with any random process). The more young (bigger the sample size) - the more likely your results are to be close to predicted.
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I decided my old sig was too big.

the guy i got them from bred his bloodred to his snow, and got the babies, which i bought a pair, he said they were bloodreds het for snow or (avalanche) i get confused on this stuff, i like it when you say you get 6 blood reds 3 of this and 3 of that, all the poss. het stuff doesnt mean diddly to me or most people, it just means your 2 out of 3 is and 1 aint...lol
later boadave

Bloodred x Snow = Your Snakes
Offspring are predicted to be...
100.00%, Het for Snow, Het for Bloodred Pattern

Het x Het
Offspring are predicted to be...
12.50%, Het for Snow, Het for Bloodred Pattern
6.25%, Het for Snow
6.25%, Het for Amel, Het for Bloodred Pattern
6.25%, Het for Anery, Het for Bloodred Pattern
6.25%, Amelanistic, Het for Anery, Het for Bloodred Pattern
6.25%, Anerythristic, Het for Amel, Het for Bloodred Pattern
6.25%, Bloodred Pattern, Het for Snow
3.13%, Het for Bloodred Pattern
3.13%, Bloodred Pattern, Het for Amel
3.13%, Het for Amel
3.13%, Snow, Het for Bloodred Pattern
3.13%, Bloodred Pattern, Het for Anery
3.13%, Anerythristic, Het for Bloodred Pattern
3.13%, Amelanistic, Bloodred Pattern, Het for Anery
3.13%, Het for Anery
3.13%, Anerythristic, Bloodred Pattern, Het for Amel
3.13%, Amelanistic, Het for Anery
3.13%, Amelanistic, Het for Bloodred Pattern
3.13%, Anerythristic, Het for Amel
1.56%, Amelanistic
1.56%, Anerythristic
1.56%, Anerythristic, Bloodred Pattern
1.56%, Amelanistic, Bloodred Pattern
1.56%, Normal
1.56%, Snow, Bloodred Pattern
1.56%, Bloodred Pattern
1.56%, Snow

In simple form!!

Male is, Het for Snow, Het for Bloodred Pattern
Female is, Het for Snow, Het for Bloodred Pattern

Offspring are predicted to be...
NOTE: THIS IS A *PHENOTYPE RESULTS ONLY* REPORT
27/64, Normal
9/64, Bloodred Pattern
9/64, Anerythristic
9/64, Amelanistic
3/64, Anerythristic, Bloodred Pattern
3/64, Amelanistic, Bloodred Pattern
3/64, Snow
1/64, Snow, Bloodred Pattern

If you want to see Bloodred (Snow) alot sooner you need one of the pair to be Bloodred (Snow). 9/64 You need alot of luck!

holy crap that looks complicated, thats like shooting for a diamond in the rough, thanks for the help.....boadave

Are yours bloodred or are they het bloodred?

If the snow parent was het bloodred, then yours could be bloodred.
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I decided my old sig was too big.

no mine are bloodreds het for snow!! so worst case they are just bloodreds! so i should get more bloodreds right??............
later boadave

If your are homozygous bloodred and hetrozygous snow(AKA het anery A and het amel) then all offspring will be bloodred. One of the above posts had the correct calculations for you but here they are again.

1/16 Bloodred with no het's
2/16 Bloodred het Anery A
2/16 Bloodred het Amel
1/16 Bloodred Amel(Fire)
2/16 Bloodred Amel(Fire) het Anery A
1/16 Bloodred Anery A(Granite)
2/16 Bloodred Anery A(Granite) het Amel
4/16 Bloodred het Amel het Anery A
1/16 Bloodred Snow(Avalanche)

Hope that helps,

Sean.
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1.1 BRB
1.1 Triple Het TPRS's
0.1 Silver TPRS
1.1 Amel Bloodred Corns
0.1 Abbott Okeetee Corn
0.1 Blizzard Bloodred Corn
1.1 Thayeri Kingsnakes
0.1 Reeve's Turtle
0.2 Amstaff's
1.0 Pudytat

thank you all for the info...and ty sean for putting it a little simpler, the avalanche is what i`m after!!

later boadave

Keep in mind that even if you have a clutch size of exactly 16 eggs, you won't get those exact results. Each individual egg will have those odds to be one of all those variations that are possible with the two snakes you breed together.

'Het' basically means it carries different pairs of genes at a specific point along the long chain of DNA. One half of each pair will come from the male, and the other from the female.

You are combining three different morph types in your snakes, so it makes it rather complicated...two color morphs and a pattern morph.

Anerythristic (anery for short): lack of red pigment.
Amelanistic (amel for short): Lack of brown/black pigment (melamine)

These two are color traits and are what is called simple 'recessive' traits. You need to have two genes at that location to see either trait in the animal. If you only have one recessive gene and the other is normal, then the snake will appear normal but will be considered 'het' (het is short for
heterogenetic).

Bloodreds....not sure how these work...but seem to be a pattern morph, the snake gets more red pigment as it gets older...maybe a sort of hypo-anery...and I am not sure if its a dominate trait or co-dom...

For more detailed info about corn snake genetics...check the website below:

www.vmsherp.com/LCGenetics101.htm
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PHLdyPayne

I haven't done the math for multiple genes - but I have done the math for single gene.

The punnet square prediction for a het to het pairing is 1/4 of the clutch - but you will miss that more often than you hit it.

Below is a table for 16 hatchlings - k = number that are homozygous for the morph allele, P(k) is the probability of getting exactly that number, rounded to four decimal places.

k|P(k) |%
0|0.0100| 1.00%
1|0.0535| 5.35%
2|0.1336|13.36%
3|0.2079|20.79%
4|0.2252|22.52%
5|0.1802|18.02%
6|0.1101|11.01%
7|0.0524| 5.24%
8|0.0197| 1.97%
9|0.0058| 0.58%
10|0.0014| 0.14%
11|0.0002| 0.02%
12|0.0000| 0.00%
13|0.0000| 0.00%
14|0.0000| 0.00%
15|0.0000| 0.00%
16|0.0000| 0.00%

Four expressing a morph is the most common (predicted) result for het to het pairing producing 16 young - but it will happen less than once every four clutches of 16.

The formula I used is the "binomial probability formula" and assumes that there is no bias towards one allele over the other, that there really is a 50/50 chance of any sperm or egg carrying the morph gene in a heterozygous gene pair (as I suspect there is).
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I decided my old sig was too big.

When you say he mated his bloodred to his snow. Was the snow het for bloodred? This is the only way he could get bloodred het for snow.

Unless he meant avalanche instead of snow. But yeah I would make sure that the pair is actually bloodred het snow instead of normals triple het for avalanche.

Sean.
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1.1 BRB
1.1 Triple Het TPRS's
0.1 Silver TPRS
1.1 Amel Bloodred Corns
0.1 Abbott Okeetee Corn
0.1 Blizzard Bloodred Corn
1.1 Thayeri Kingsnakes
0.1 Reeve's Turtle
0.2 Amstaff's
1.0 Pudytat