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  • 08-03-2010, 07:02 PM
    SnakeLady1990
    How Do You Breed For Hets?
    I'm learning about genetics and breeding, slowly...haha.

    How do you breed for hets? How do you know if something is het or not?
  • 08-03-2010, 07:16 PM
    Kyle@theHeathertoft
    Re: How Do You Breed For Hets?
    Het stands for heterozygous, meaning one copy of a gene. Each parent can contribute only one copy of a gene to it's offspring for each morph. Let's take Mojaves, my favourite. They are co-dominant, so a heterozygous Mojave is a Mojave visually...and a homozygous (two copies of the gene) Mojave is the blue-eyed white-bodied Super Mojave.

    Now for recessive traits...a snake needs two copies of the Clown gene to look like a Clown. If they only have one copy of the gene, they look like any other normal snake...except if you breed them to a Clown, you have a 50% chance of getting another Clown in the offspring. :) Breeding for hets is easy...breed a homozygous animal to a normal and bam, hets. ;)

    Since recessive traits are not visually expressed you need to trust your breeder about what you are getting, obviously. :)
  • 08-03-2010, 07:57 PM
    Jsh
    Re: How Do You Breed For Hets?
    Hi,

    This is a excellent post by Judy.

    A Lesson in Basic Genetics
    http://www.ball-pythons.net/forums/s...ad.php?t=52847
  • 08-03-2010, 08:27 PM
    SnakeLady1990
    Re: How Do You Breed For Hets?
    Is it possible to get something that is 'het' spider?
  • 08-03-2010, 08:30 PM
    A.VinczeBPs
    Re: How Do You Breed For Hets?
    Quote:

    Originally Posted by SnakeLady1990 View Post
    Is it possible to get something that is 'het' spider?

    No, the spider morph is Dominant.

    So you either have a spider, or you have a normal, no hets.
  • 08-03-2010, 08:32 PM
    OhhWatALoser
    Re: How Do You Breed For Hets?
    Quote:

    Originally Posted by A.VinczeBPs View Post
    No, the spider morph is Dominant.

    So you either have a spider, or you have a normal, no hets.


    ehhh... no exactly

    all spiders are hets, het is short for hetrozygous, there is no known homozygous spider.
  • 08-03-2010, 08:34 PM
    Kyle@theHeathertoft
    Re: How Do You Breed For Hets?
    To my knowledge all Spiders ARE "het spider." Just like how all Mojaves are "het Mojave." Spider is a dominant trait meaning it needs only one copy of the gene to be expressed. :)
  • 08-03-2010, 08:36 PM
    SnakeLady1990
    Re: How Do You Breed For Hets?
    Oh ok. So something that is just 'dominate' is a het...a het you can see. So what are the hets that you cannot see? How do you breed for those?
  • 08-03-2010, 08:38 PM
    SnakeLady1990
    Re: How Do You Breed For Hets?
    Like, for example. I see a lot of things that say "100% het for..."

    If I wanted to breed to make a "het" how would I do that, and what can that be done with?

    And what does 66% het mean?
  • 08-03-2010, 11:43 PM
    Kyle@theHeathertoft
    Re: How Do You Breed For Hets?
    Quote:

    Like, for example. I see a lot of things that say "100% het for..."
    "100% het" means that one parent was for sure a whatever. Like say...Clown. Breed a Clown to a Normal, all offspring are 100% het Clown. They just LOOK like normals. ;)

    Quote:

    If I wanted to breed to make a "het" how would I do that, and what can that be done with?
    Uhhh, breed a Normal to whatever homozygous snake you want. :P Bear in mind that recessive morphs are NOT VISIBLE in the het form, like Clowns. A het Clown looks like any old Normal. With recessives you cannot visually prove them to be het...they can only truly be proven by breeding them to another snake who is heterozygous or homozygous for that gene and producing homozygous offspring.

    Of course you can also get a het from a trusted, reputable breeder who provides documentation. :)

    Now...co-dominant morphs are visually expressed in both heterozygous and homozygous forms. The het form of Pastel is...well...a Pastel. :) The homozygous form of a Pastel is a Super Pastel. Thus, if someone tries to sell you a Normal-phase Ball claiming it's het Pastel, you know they are lying or ignorant of what they have. :)

    Quote:

    And what does 66% het mean?
    It means it might be het for whatever, but it isn't a guarantee. If you breed a het Clown to another het Clown, some of the offspring might be Clowns...some might be Normals who are het for Clown...and some are just Normals who didn't inherit the Clown gene at all. When one or both parents are het for something and the other parent (if applicable) is not het for that gene, it is POSSIBLE the offspring are het but you won't know for sure until you prove it by breeding the homozygous form from them. :)
  • 08-03-2010, 11:47 PM
    Kyle@theHeathertoft
    Re: How Do You Breed For Hets?
    Oh also, read this. GREAT crash-course on genetics. :)

    http://www.ballpython.ca/genetics_101.html

    Honestly, the only reason I know anything about het versus homozygous and and all that jazz is because I have forgotten more than most people will ever even KNOW about horse colour genetics. ;) Ironically once you get the hang of recessive, co-dom aka incomplete dominant and dominant inheritance, it doesn't matter what species it is. :D Show me a horse, and I can tell you with some degree of certainty what colour it's parents were. Show me a pair of horses and I can tell you what you are most likely to produce. It translates well into Ball Python morph genetics, ironically enough. :D
  • 08-29-2010, 10:10 PM
    SnakeLady1990
    All this information is making a lot of sense now. Thanks so much for teaching me!!

    A cinnamon would be a similar example to the pastel theory correct? Since you can breed two cinny's and get the super cinny?
  • 08-29-2010, 10:18 PM
    OhhWatALoser
    cinny and every other co-dom morph out there, they all work exactly the same
  • 08-29-2010, 10:30 PM
    SnakeLady1990
    Re: How Do You Breed For Hets?
    Quote:

    Originally Posted by Kyle@theHeathertoft View Post
    Oh also, read this. GREAT crash-course on genetics. :)

    http://www.ballpython.ca/genetics_101.html

    Honestly, the only reason I know anything about het versus homozygous and and all that jazz is because I have forgotten more than most people will ever even KNOW about horse colour genetics. ;)

    I just had someone explaining to me about horse genetics as an example the other day, haha. I didn't even think about other animals and genetics. Again, thanks for all the help guys!
  • 08-30-2010, 01:58 AM
    Kyle@theHeathertoft
    Re: How Do You Breed For Hets?
    No problem, glad we could help! :D
  • 08-30-2010, 09:20 AM
    anatess
    Re: How Do You Breed For Hets?
    Quote:

    Originally Posted by Kyle@theHeathertoft View Post
    Oh also, read this. GREAT crash-course on genetics. :)

    http://www.ballpython.ca/genetics_101.html

    Honestly, the only reason I know anything about het versus homozygous and and all that jazz is because I have forgotten more than most people will ever even KNOW about horse colour genetics. ;) Ironically once you get the hang of recessive, co-dom aka incomplete dominant and dominant inheritance, it doesn't matter what species it is. :D Show me a horse, and I can tell you with some degree of certainty what colour it's parents were. Show me a pair of horses and I can tell you what you are most likely to produce. It translates well into Ball Python morph genetics, ironically enough. :D


    My husband is a blue-eyed blonde American. I'm dark-eyed, dark-haired Filipino. All my kids are dark-eyed, dark-haired Filipino. A blue-eyed blonde daughter would have been really cool, but nope, ain't happening. Here's hoping one of my sons marry a blue-eyed, blonde girl. Then maybe I can have a blue-eyed blonde granddaughter to spoil.

    That's how I learned about genetics...

    Of course, human genetics is a lot more complex than a ball python's.
  • 08-30-2010, 09:23 AM
    ahunt037
    Re: How Do You Breed For Hets?
    Quote:

    Originally Posted by Jsh View Post
    Hi,

    This is a excellent post by Judy.

    A Lesson in Basic Genetics
    http://www.ball-pythons.net/forums/s...ad.php?t=52847

    i always enjoy reading this post it always gets me back on track and helps me understand everything again overall an amazing post by Judy
  • 08-30-2010, 10:07 PM
    Kyle@theHeathertoft
    Re: How Do You Breed For Hets?
    Quote:

    My husband is a blue-eyed blonde American. I'm dark-eyed, dark-haired Filipino. All my kids are dark-eyed, dark-haired Filipino. A blue-eyed blonde daughter would have been really cool, but nope, ain't happening. Here's hoping one of my sons marry a blue-eyed, blonde girl. Then maybe I can have a blue-eyed blonde granddaughter to spoil.

    That's how I learned about genetics...

    Of course, human genetics is a lot more complex than a ball python's.
    Horse colour genetics? I got down pat. Ball Python morph genetics? No problem. Dog colour genetics? I'm...admittedly still shaky but getting there. Cat colour genetics? Less confident about that than dogs but not totally stupid either. ;)

    PEOPLE genetics, for hair/eye colour et cetera? Yeah I got NO CLUE. :D Had someone try to explain it to me once...I swear my brain couldn't comprehend.
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