Reptile & Amphibian Forums

im just trying to see the possibilities of results

Not sure if this helps or not.
12.5% WT
25% Het. ghost,
12.5% Homozygous ghost,
12.5% Het. pastelc,
25% Het. pastelc, Het. ghost,
12.5% Het. pastelc, Homozygous ghost
http://www.geneticswizard.com/f_start_genetics_wizard.asp
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Vince Pramuk
Vince Pramuk Reptiles

there is no het pastel soooo what genetic outcome would that increase

>>there is no het pastel soooo what genetic outcome would that increase

Actually, he is correct. A pastel is heterozyous form for the pastel gene. The Homozygous form is the super pastel. Het pastel = "pastel"
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Jeremy Conrad
_____________

Isn't it cooler that serpent's don't walk anymore?
(Genesis 3:14)

Your result would be

1 - pastel ghost
1 - pastel 66% poss het ghost
1 - 66% poss het ghost
1 - ghost

theoretically of course

Jason

if your calculations are correct thats awesome because i bought 4 100% het ghost females from John Piro

>>Your result would be
>>
>>1 - pastel ghost
>>1 - pastel 66% poss het ghost
>>1 - 66% poss het ghost
>>1 - ghost
>>
>>theoretically of course

...you're 3 times as likely to get a 66% possible het as a visual ghost...you have them set up as if they're all equally likely...see my reply below.
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Jeremy Conrad
_____________

Isn't it cooler that serpent's don't walk anymore?
(Genesis 3:14)

>>im just trying to see the possibilities of results

1 - Set it up for Het ghost x het ghost (simple)...
25% - Ghost
50% - Het Ghost
25% - normal

2 - Divide the %'s by 2 and add pastel in front of one set...
12.5% - Pastel Ghost
25% - Pastel Het Ghost
12.5% - Pastel

12.5% - Ghost
25% - Het Ghost
12.5% - Normal

Obviously, though, the Het's would be 66% poss. Het, so it would PRACTICALLY turn out to be...
12.5% Pastel Ghost
12.5% Ghost
37.5% Pastel 66% PHG (all the visual pastels)
37.5% 66% PHG (all normal-looking)

ALL that to say, just take a simple punnet sq. for the ghost and divide everything by two and add pastel in front of it.
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Jeremy Conrad
_____________

Isn't it cooler that serpent's don't walk anymore?
(Genesis 3:14)

Hello,
I think this is what you are looking for.

Pastel Het. Hypo across the top, and a Het. Hypo down the left side.

pg pG Pg PG

Pg Ppgg PpGg PPgg PPGg

PG PpGg PpGG PPGg PPGG

Pg Ppgg PpGg PPgg PPGg

PG PpGg PpGG PPGg PPGG

Results:
PPGG = 2 Normals
PpGG = 2 Pastels
PPgg = 2 Hypos
Ppgg = 2 Pastel Hypos
PpGg = 4 Pastel Het. Hypos
PPGg = 4 Het. Hypos

6 - 66% Het. Hypos
6 - Pastel 66% Het. Hypos
2 - Hypos
2 - Pastel Hypos

Hope this helps,
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Tim and Monica Bailey
Bailey & Bailey Reptiles

wouldn't it still be possible to get super pastals from such a crossing/ i know how dominant, recessive and co-dominant genes work but with a mix of dominant, co-dominant and recessive all in two snakes, seems a bit confusing to me.

anyway, the way i understand it, you would get the following;
one out of 16 chance of a super pastal
4 out of 16 chance of a normal pastal
2 out of 16 chance of a pastal het ghost
4 out of 16 chance of a normal ball python
4 out of 16 chance of a normal het ghost [or 50percent het ghost]
one out of 16 chance of a ghost morph

this is my understanding on how it would work but again, i can easily be totally wrong. or only half right...
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PHLdyPayne

you cannot get a super if there is only 1 patel involved...even if it where a super....do a search on the internet for a dihybrid cross punnett square...you results will be for 16 offspring
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Michael Enriquez

>a mix of dominant, co-dominant and recessive all in two snakes, seems a bit confusing to me.

Just remember that all Punnett squares are done the same way. It doesn't matter whether all the mutant genes are recessive, all are dominant, or there is a mix. The squares are still done the same way.

First you get all the possible combinations of genes that the sperm can have and all the possible combinations of genes that the eggs can have.

The male is pastel het ghost. He has a pastel mutant gene paired with a normal gene (AKA heterozygous pastel). And he has a normal gene paired with a ghost mutant gene. Using
P = pastel
p = pastel's normal counterpart
g = ghost
G = ghost's normal counterpart
the male is Pp Gg. So half his sperm has a P gene and half has a p gene. Half the P sperm are G, and half are g. And half the p sperm are G, and half are g. That gives 4 possible combinations of genes in the sperm:
P G
P g
p G
p g

The female is heterozygous ghost. As the female is not pastel, all the eggs must have the p gene. Half of the eggs have the G gene, and the other half have the g gene. That produces 2 gene combinations in the eggs:
p G
p g

Second, plug in one parent's gene combinations across the top of the square and the other parent's gene combinations down the left side of the square.

Third, combine the sperm and eggs, and you have the answer.

Clear as mud?

Paul Hollander

It seems easier for me to just say 1 in 4 babies (.25) mathmatically will be Ghost (from het x het ghost line) and that 1 out of 2 of all the babies will be pastel (.5) and you just multiply .25 x .5 and the odds of getting a Pastel Ghost is .125 which in a % is 12.5% .. If you don't want to think alot about it, you should end up with 1 out of every 4 eggs being Ghost and you have a 50% chance that each ghost is also a Pastel, which makes it 1 in 8 odds to make a Pastel Ghost by using a Pastel/het Ghost and a het Ghost... Different ways of saying the same thing, some ways are easier to understand than others I find, hopefully this isn't to tough! Anthony McCain-McCain's Reptiles..