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  1. #11
    Registered User chinchillachic18's Avatar
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    Re: Is there a calculator?

    like say you wanted this color for example

    http://www.newenglandreptile.com/ner...ll-python.html


    Are the odds 1-in-16 because the carmel albino and the ghost are both recessive?
    Reptile lover

    Love is much like a wild serpent, beautiful and calm, but willing to draw blood in its defense

  2. #12
    Registered User chinchillachic18's Avatar
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    Re: Is there a calculator?

    and if you breed 2 spiders together and you get a normal baby, later on if you breed that normal to another normal, do you have a chance of that normal creating a spider baby?
    Reptile lover

    Love is much like a wild serpent, beautiful and calm, but willing to draw blood in its defense

  3. #13
    BPnet Senior Member WingedWolfPsion's Avatar
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    Re: Is there a calculator?

    Spiders might be dominant, but might not be, and we will never know because there are no supers (well, we will never know until they do actual genetic testing). (In a true dominant, the homozygous version would look exactly the same as the het version).
    Because of the lack of supers, I would set them up as co-dominant, and figure that all homozygous spiders die--this is probably what is happening. Most likely the eggs never hatch. Statistics would have to be researched to figure out if spider/spider crosses produce fewer live hatchlings on average. But there are no spiders that produce all spider offspring when bred to a normal, so for genetics purposes, it works as a co-dom.

    Here's an example:

    Say I want to breed a pastel female to a spider male.

    It asks how many mutant traits are involved. I answer "2". I have a spider, and a pastel--that's 2 mutant genes.

    I set up Gene 1. It's a co-dominant gene--so I check that, and is named "spider", so I type in spider in the box.

    I set up the calculator for the male--he's a spider. He's heterozygous, so I check that box.

    Then I set up the female.
    She doesn't have the spider gene, so I check WT (without trait).

    I set up Gene 2. It's a co-dominant gene--so I check that, and is named "pastel", so I type in pastel in the box.

    The female's pastel. She's heterozygous, so I check that box.

    The male doesn't have the pastel gene, so I check "WT" on his side, by Gene 2.

    Then I click the button, and it gives me the percentages.

    I get my answer:

    25% WT
    25% Het. Pastelc,
    25% Het. Spiderc,
    25% Het. Spiderc, Het. Pastelc,

    (The c indicates a co-dominant trait).

    25% normals, 25% pastels, 25% spiders, and 25% bumblebees
    --Donna Fernstrom
    16.29 BPs in collection, 16.11 BP hatchlings
    Eclipse Exotics
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    Follow my Twitters: WingedWolfPsion, EclipseMeta, and EclipseExotics

  4. The Following User Says Thank You to WingedWolfPsion For This Useful Post:

    chinchillachic18 (10-19-2008)

  5. #14
    Registered User chinchillachic18's Avatar
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    Re: Is there a calculator?

    ohh ok i get it now lol thanks that helped alot! i was really confused about it
    Reptile lover

    Love is much like a wild serpent, beautiful and calm, but willing to draw blood in its defense

  6. #15
    BPnet Senior Member WingedWolfPsion's Avatar
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    Re: Is there a calculator?

    Quote Originally Posted by chinchillachic18 View Post
    like say you wanted this color for example

    http://www.newenglandreptile.com/ner...ll-python.html


    Are the odds 1-in-16 because the carmel albino and the ghost are both recessive?
    The odds depend on what you start with. The Caramel Glow is 2 recessive traits.

    You can go about creating one several ways. The fastest is to breed a caramel to a ghost. That will give you a litter of NORMAL hatchlings which are all 100% het for caramel, and 100% het for ghost. They carry 1 copy of each recessive gene.

    Raise them up, and breed them together.

    6.25% WT
    12.5% Het. Caramel,
    6.25% Homozygous Caramel,
    12.5% Het. Ghost,
    25% Het. Ghost, Het. Caramel,
    12.5% Het. Ghost, Homozygous Caramel,
    6.25% Homozygous Ghost,
    12.5% Homozygous Ghost, Het. Caramel,
    6.25% Homozygous Ghost, Homozygous Caramel

    There is only a 6.25% chance that you will get a caramel glow.

    As for the spiders: No
    Spider is not a recessive gene. It is co-dominant. That means if the gene is present, the animal will visually display it--in the case of a spider, if the spider gene is THERE, then the animal is a spider. If it's not there, then the animal is a normal, period. Breeding 2 normal siblings from spider X spider breedings will get you normals, and never anything more.

    Pastel is another example of a co-dominant gene. You can think of co-dominants as being a sort of 'visual recessive'. A pastel is heterozygous for super-pastel. Super-pastels (the homozygous form) carry 2 copies of the pastel gene, while pastels carry only one copy. Normals from pastel clutches do not carry the gene at all.
    --Donna Fernstrom
    16.29 BPs in collection, 16.11 BP hatchlings
    Eclipse Exotics
    http://www.eclipseexotics.com/
    Author Website
    http://donnafernstrom.com
    Follow my Twitters: WingedWolfPsion, EclipseMeta, and EclipseExotics

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