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What does sterile mean???? #554762
05/21/08 04:07 PM
05/21/08 04:07 PM

T
Tyrel
Unregistered
Tyrel
Unregistered
T



On the glider adds it says comes from a sterile line. what does that mean? glider

Re: What does sterile mean???? [Re: ] #554765
05/21/08 04:10 PM
05/21/08 04:10 PM

M
Mio
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Mio
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M



The glider may be sterile, or unable to breed. This applies mostly to male gliders, particularly mosaics.

Re: What does sterile mean???? [Re: ] #554784
05/21/08 04:43 PM
05/21/08 04:43 PM

T
Tyrel
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Tyrel
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T



okay thanks

Re: What does sterile mean???? [Re: ] #554791
05/21/08 04:51 PM
05/21/08 04:51 PM

L
LB_Glider
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LB_Glider
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L



Why? What causes the sterility in these gliders? How do you know if the glider might be sterile or not?

Re: What does sterile mean???? [Re: ] #554821
05/21/08 05:30 PM
05/21/08 05:30 PM

T
Tyrel
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Tyrel
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T



When it says they come from a sterile line how would they have had babies?

Re: What does sterile mean???? [Re: ] #554895
05/21/08 07:42 PM
05/21/08 07:42 PM

S
Soh
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Soh
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S



Genetic traits are carried on chromosomes. Chromosomes line up in pairs, and in each pair you get one chromosome from the mother and one chromosome from the father. Gender is determined by one specific pair of chromosomes which come in two types, X and Y. Females have XX, one X from mom and one X from dad. Males have XY, one X from mom and one Y from dad. Females cannot pass on a Y chromosome because they don't have any in them.

If a trait is carried on one of these gender chromosomes then it will get passed along differently to sons and daughters. If a trait is carried on the Y chromosome then fathers can pass the trait to sons, but daughters will never have it as they cannot inherit Y chromosomes.

If a trait is carried on the X chromosome then females can have the trait (if it's on both their X chromosomes) or they can be carriers (if it's on only one X chromosome and the other chromosome is stronger). Females can pass the trait on to their sons if the son gets the X chromosome with that trait on it. It gets a bit tricky here sometimes, but usually the X chromosome is the stronger and the male will have the trait.

If sterility is associated with some male mosaic gliders, it means that those mosaic families carry a fault on one of their sex chromosomes that usually causes sterility when the male glider inherits the faulty chromosome. But females of those families could be carriers of the faulty chromosome without having the trait, so they could still breed and pass on the faulty chromosome to daughters who are also carriers or to sons with the trait.

Last edited by Soh; 05/21/08 07:45 PM.
Re: What does sterile mean???? [Re: ] #554897
05/21/08 07:43 PM
05/21/08 07:43 PM
Joined: Aug 2007
Posts: 4,645
Ohio
Guerita135 Offline
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Guerita135  Offline
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Joined: Aug 2007
Posts: 4,645
Ohio
Originally Posted By: Tyrel
When it says they come from a sterile line how would they have had babies?


The males can't reproduce, but the females can. However, any male joeys that the females have would then be considered POSSIBLY sterile.

IF I remember correctly, the reason for the sterility in because some of the first mosaics were being inbred too much, resulting in sterility. I guess back then they didn't know that only 1 parent had to be a mosaic to produce a mosaic.


~Nicole~

Proudly enslaved by lots of silly suggies, 3 crazy kitties, a huffy hedgie, and a pretty puppy! grin
Re: What does sterile mean???? [Re: Guerita135] #554909
05/21/08 07:54 PM
05/21/08 07:54 PM

S
Soh
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Soh
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S



Originally Posted By: Guerita135

IF I remember correctly, the reason for the sterility in because some of the first mosaics were being inbred too much, resulting in sterility. I guess back then they didn't know that only 1 parent had to be a mosaic to produce a mosaic.


Yeah, the assumption with any new mutation is that it's probably recessive, so people typically breed the mutation back into itself to try to strengthen the line of gene expression. smirk When done irresponsibly it strengthens the bad traits too, ugh.

Re: What does sterile mean???? [Re: ] #555006
05/21/08 09:10 PM
05/21/08 09:10 PM

L
LB_Glider
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LB_Glider
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L



Thank you both for explaining all that to me. You made it easy to understand.

I don't know if anyone else would like to learn more about it, or if it is being covered at this SGGA, but a suggestion is to have a teaching session on genes and breeding as one of the topics at one of the SGGAs.

Again thanks!

Re: What does sterile mean???? [Re: ] #555056
05/21/08 10:09 PM
05/21/08 10:09 PM
Joined: Mar 2005
Posts: 3,224
North Fort Worth - TX
jacknsally Offline
Glider Addict
jacknsally  Offline
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Joined: Mar 2005
Posts: 3,224
North Fort Worth - TX
Originally Posted By: LB_Glider
Why? What causes the sterility in these gliders? How do you know if the glider might be sterile or not?


Mosiac breeders know what lines their mosaics come from and will share that information. I have 2 sterile males, 1 was born with an empty pom pom and the other has his testicles, though he has them he is still considered sterile till he produces.


Ñancy
~Always on my mind & in my heart Jack, Sally & Serenity~


Mobmilli's Boutique
Re: What does sterile mean???? [Re: jacknsally] #555099
05/22/08 12:20 AM
05/22/08 12:20 AM
Joined: Jun 2007
Posts: 3,420
Twin Cities, MN
cinnamonstix Offline
Glider Addict
cinnamonstix  Offline
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Joined: Jun 2007
Posts: 3,420
Twin Cities, MN
This is in some Leu lines as well.


~GWEN~
Crazy Hubby Dru
Tortoise: Vork
Cats: Scooby, Swiper, Zero, Dinah & Sykes
Suggies: Meeko, Willow & Nemo; Rei, Rafiki & Rajah; Opal, Lily & Link; Tael, Tatl & Navi; Kristoff Krabbs & Crabby Patty
:rbridge: Fern, Cjarsa, Syfka, Icarus, Ivy, Howie & Gracie

www.cinnamonstix-n-sugar.com
Re: What does sterile mean???? [Re: ] #555476
05/22/08 04:02 PM
05/22/08 04:02 PM

T
Tyrel
Unregistered
Tyrel
Unregistered
T



Originally Posted By: Soh
Genetic traits are carried on chromosomes. Chromosomes line up in pairs, and in each pair you get one chromosome from the mother and one chromosome from the father. Gender is determined by one specific pair of chromosomes which come in two types, X and Y. Females have XX, one X from mom and one X from dad. Males have XY, one X from mom and one Y from dad. Females cannot pass on a Y chromosome because they don't have any in them.

If a trait is carried on one of these gender chromosomes then it will get passed along differently to sons and daughters. If a trait is carried on the Y chromosome then fathers can pass the trait to sons, but daughters will never have it as they cannot inherit Y chromosomes.

If a trait is carried on the X chromosome then females can have the trait (if it's on both their X chromosomes) or they can be carriers (if it's on only one X chromosome and the other chromosome is stronger). Females can pass the trait on to their sons if the son gets the X chromosome with that trait on it. It gets a bit tricky here sometimes, but usually the X chromosome is the stronger and the male will have the trait.

If sterility is associated with some male mosaic gliders, it means that those mosaic families carry a fault on one of their sex chromosomes that usually causes sterility when the male glider inherits the faulty chromosome. But females of those families could be carriers of the faulty chromosome without having the trait, so they could still breed and pass on the faulty chromosome to daughters who are also carriers or to sons with the trait.


Thanks you made it make perfect sense!


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