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#38156 - 02/25/05 11:32 PM Genetics!
Anonymous
Unregistered


I hope I'm posting this in the right place...

Chad & I have been doing some research on leucistics and it occurred to me that I don't really understand the genetics behind breeding.

I do understand the whole dominance & recessive thing but how do they figure out the precentages? For example Toandfrogliders has info on 66% Het Leucistics- how do they know it's 66%? Is it just the basic genetics square & probability or is there testing done?

Maybe this is a question for ToandFroGliders?

Gracias! <img src="/ubbthreads/images/graemlins/multi.gif" alt="" />

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#38157 - 02/25/05 11:51 PM Re: Genetics! [Re: ]
Anonymous
Unregistered


If you breed 2 100% hets together then you get a 66% het. and I know I will be thinking of more. I live close to you I think

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#38158 - 02/25/05 11:52 PM Re: Genetics! [Re: ]
Anonymous
Unregistered


the 66% can become a 100% if it breeds to a leucistic or another het and has a white baby. any more questions?

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#38159 - 02/25/05 11:59 PM Re: Genetics! [Re: ]
Anonymous
Unregistered


So it's basically just your standard 8th grade genetics class squares & probability. That's what I thought but I wasn't sure. Thanks though! When Chad get's home I'll see if he has more questions because it was his to begin with and I couldn't remember <img src="/ubbthreads/images/graemlins/read.gif" alt="" />

<img src="/ubbthreads/images/graemlins/offtopic.gif" alt="" />

Yep- we are about 45 minutes from eachother, I know cuz I like to shop in the Lansing area. Have you been to Preuss Pet Store? I can't remember if that's the whole name. I haven't been there since I got my gliders but I wanna go back to see if they have anything they might like.

Thanks for a speedy response! <img src="/ubbthreads/images/graemlins/multi.gif" alt="" />

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#38160 - 02/26/05 12:01 AM Re: Genetics! [Re: ]
Anonymous
Unregistered


YEah I'm going to get a job there!! (PRUSSE OR SOMETHING LIKE THAT I DONT KNOW HOW TO SPELL IT) Also it is like 8th grade genetics!

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#38161 - 02/26/05 02:19 AM Re: Genetics! [Re: ]
Anonymous
Unregistered


</font><blockquote><font class="small">Quote:</font><hr />
For example Toandfrogliders has info on 66% Het Leucistics- how do they know it's 66%? Is it just the basic genetics square & probability or is there testing done?

<hr /></blockquote><font class="post">
The reason that they would call a glider a 66% het is because it is out of a het x het breeding. Out of het x het breeding, with four offspring by virtue of basic genetic(Punnett square, Mendelian Genetic) principles you will likely get one normal grey, two hets and one leucistic. The chances of the standard colored gliders being hets would be 66% since two out of three standards would be hets, and the fourth glider would be a leucistic, thus removing it from the pool of possible hets, you see? The chances of a standard glider from a het x het breeding being a het are 66%. This has been shown to be represented consistently in the offspring of het x het breedings according to those who have bred leucistics and leucistic hets. The figure is also an easy way of differentiating between possible hets from het x normal breedings from offspring out of het x het breedings.

Possible hets from het x normal breedings are described as being 50% hets since 50% of the offspring(which will all be standard) will carry the leucistic gene. None will be leucistic.

A glider born out of a leucistic x normal(or any other variation) breeding will always be a standard and they will all be hets aka a 100% het.
Hope that helped <img src="/ubbthreads/images/graemlins/thumb.gif" alt="" />


Edited by big ern! (02/26/05 05:41 AM)

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#38162 - 02/26/05 06:00 AM Re: Genetics! [Re: ]
Charlie H Offline
Glider Slave

Registered: 11/13/03
Posts: 1659
Loc: Wallis Texas
Has anyone ever actually produced a leucistic by breeding a het to het? Also has anyone ever produced a WFB by breeding two WFB hets? Just curious if the glider colors actually follow the square.
Charlie H
_________________________
Rescue & Rehabilation
http://www.angelfire.com/tx/glidertree/
[]glidertree@toast.net[/]

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#38163 - 02/26/05 06:18 AM Re: Genetics! [Re: ]
Anonymous
Unregistered


In regards to leucistics, yes, leucistics can and have been produced out of two hets.

As far as wf hets producing wf's, I'm not certain, but I recall hearing that it has been done, but for the most part one shouldn't hold their breath for a wf to come out of two wf hets.... Most people without hesitation call a glider born out of one wf parent and one standard, a het, but is it really a certain het? It isn't fully understood how the wf gene is passed, however leucistic genes seem to show some consistency with punnett squares. I've seen the question posed a number of times about wf het breedings, no sufficient answer yet?

I'm sure Judie or Sheila would be good people to answer that question.


Edited by big ern! (02/26/05 06:21 AM)

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#38164 - 02/26/05 10:55 AM Re: Genetics! [Re: ]
Anonymous
Unregistered


</font><blockquote><font class="small">Quote:</font><hr />
Possible hets from het x normal breedings are described as being 50% hets since 50% of the offspring(which will all be standard) will carry the leucistic gene. None will be leucistic.

A glider born out of a leucistic x normal(or any other variation) breeding will always be a standard and they will all be hets aka a 100% het.
Hope that helped <img src="/ubbthreads/images/graemlins/thumb.gif" alt="" />

<hr /></blockquote><font class="post">

If you breed a wfb to a leucistic then it would be a 100% het and wfb or het for both.

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#38165 - 02/26/05 01:22 PM Re: Genetics! [Re: ]
Anonymous
Unregistered


Right, I forgot I added the (or any other variation) Ha!

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#38166 - 02/26/05 01:34 PM Re: Genetics! [Re: ]
Judie Offline
Serious Glideritis

Registered: 10/25/01
Posts: 9173
Loc: Edwardsville, Kansas 66113
WF Blonde x Leucistic and the offspring exhibits the WF Blonde coloration.... is a Double Het. <img src="/ubbthreads/images/graemlins/thumb.gif" alt="" />
_________________________
Web site: www.MyLittleGremlin.com

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#38167 - 05/23/05 09:05 AM Re: Genetics! [Re: ]
Sheila Offline
Serious Glideritis

Registered: 02/05/00
Posts: 5363
Loc: Ok
Cindy B with Sugar Glider Express has produced a WFB out of Two hets that were both out of WFB parents
_________________________
ToandFro Gliders

http://www.toandfrogliders.com

USDA Licensed breeder for 12 years and counting!

WE SELL THE STEALTH WHEEL

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#38168 - 05/24/05 09:49 PM Re: Genetics! [Re: ]
Sheila Offline
Serious Glideritis

Registered: 02/05/00
Posts: 5363
Loc: Ok
Here is a picture of the female joey born out of the two hets who had two wfb parents.


Attachments
397710-blonde2.JPG (48 downloads)

_________________________
ToandFro Gliders

http://www.toandfrogliders.com

USDA Licensed breeder for 12 years and counting!

WE SELL THE STEALTH WHEEL

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#38169 - 05/24/05 09:53 PM Re: Genetics! [Re: ]
Sheila Offline
Serious Glideritis

Registered: 02/05/00
Posts: 5363
Loc: Ok
Here is another.


Attachments
397712-blonde3.JPG (36 downloads)

_________________________
ToandFro Gliders

http://www.toandfrogliders.com

USDA Licensed breeder for 12 years and counting!

WE SELL THE STEALTH WHEEL

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#38170 - 05/28/05 11:04 PM Re: Genetics! [Re: ]
Anonymous
Unregistered


Please make note that the parents of the het were both blondes. Their parents were also blondes. So please do not think that you can take a normal and a wfb het and produce. The genes are not strong mixing regulars with the wfb. More studies are being done as we speak.

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#38171 - 05/29/05 07:39 PM Re: Genetics! [Re: ]
Anonymous
Unregistered


"In regards to leucistics, yes, leucistics can and have been produced out of two hets."
I beleive more BEW babies have been born out of 2 het parent combination this year than out of any other combination.

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#38172 - 05/29/05 08:49 PM Re: Genetics! [Re: lillysmomma]
Judie Offline
Serious Glideritis

Registered: 10/25/01
Posts: 9173
Loc: Edwardsville, Kansas 66113
Hmmmmm. Not sure how many BEW have been prodcued this year from leucistic het only breedings.... but I can tell you that my "BEW" Sesamie and "Leucistic Het" Shy Baby have produced "7 BEW" in less than a year and a half. I myself do not know of any Leucistic Het pairing that have done so.
_________________________
Web site: www.MyLittleGremlin.com

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