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Thread: Who decides?

  1. #1
    Senior Member Bustin''s Avatar
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    Default Who decides?

    When a breeding takes place which parent decides the color and sex of the pups? I know with humans the male decides the sex, but how about color. I am breeding of my yellow female to a black male yellow factored, who decides the color of the pups? I assume in this case the male as my female is yellow, but what about two yellow factored blacks? Just curious if anyone knows, Thanks
    Gary Metzger
    Blacks and Chocolates born Dec.14th, 2013 Dynamic Fisherman MH QAA X Bustin' Waters Go With The Flo
    www.bustinwaterkennels.com Designed by Carrie Carlson aka Boondux on RTF

  2. #2
    jimboburnsy
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    Quote Originally Posted by Bustin' View Post
    When a breeding takes place which parent decides the color and sex of the pups? I know with humans the male decides the sex, but how about color. I am breeding of my yellow female to a black male yellow factored, who decides the color of the pups? I assume in this case the male as my female is yellow, but what about two yellow factored blacks? Just curious if anyone knows, Thanks
    A black lab that carries yellow mated to a yellow lab will theoretically produce litters of 50% yellow factored black pups and 50% yellow pups. In practice there isn't anything stopping the litter from being all black, all yellow or anything in between that isn't 50/50, but that pairing can only produce yellow factored blacks and yellows.

    Two yellow factored blacks would produce litters that are 50% yellow factored black, 25% homozygous black and 25% yellow.

    Neither parent influences the phenotype nor the genotype more than the other.

    As far as who actually decides the sex, that's up to God (or chance if you prefer). I believe that dogs have the same XY=male and XX=female chromosomal arrangement as humans, but I can't verify that from personal knowledge.

    What's REALLY weird to me is that a homozygous yellow and a homozygous chocolate will produce an all black litter and if the pups from that litter are bred to eachother they can produce black, yellow and chocolate litters. What the hell is that???
    Last edited by jimboburnsy; 10-30-2009 at 10:15 AM.

  3. #3
    Senior Member Bustin''s Avatar
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    Thanks, I knew the percentage parts, but was wondering if one parent had more influence than the other.
    Gary Metzger
    Blacks and Chocolates born Dec.14th, 2013 Dynamic Fisherman MH QAA X Bustin' Waters Go With The Flo
    www.bustinwaterkennels.com Designed by Carrie Carlson aka Boondux on RTF

  4. #4
    jimboburnsy
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    Quote Originally Posted by Bustin' View Post
    Thanks, I knew the percentage parts, but was wondering if one parent had more influence than the other.
    I may have misread your original post...

    Male decides sex since the egg already has an X, in that sense is there a parent that has more influence over the pheno? Is that more like what you were asking?

    If so, then I guess the parent with the dominant epistatic yellow gene (the yellow factored black) is the difference maker in the same way that the male human is the difference maker, but I don't think either parent has an "expressive advantage", if you will...
    Last edited by jimboburnsy; 10-30-2009 at 12:09 PM.

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