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Genetics Question......

Colorfulcorns Jul 12, 2006 01:34 PM

I have a couple of genetics questions.....
My Male is a Snow(Amel&Anery A)
First Female is a Blizzard het Anery A(Amel&Charcoal)
They produced all Snows het Charcoal ???? In the genetics calc it said I "could" get amels.....Why didn't I?????

Second Female is a Banded Motley het Amel...I could get Amels het Anery and Normals het Amel/Anery...Right?

Thanks for any help....
-----
CD
Corns(Adults)
1.0 Snow
0.1 Banded Motley het Amel
0.1 Blizzard
Corns(Sub-adult)
1.0 Bloodred het Pewter
1.0 Anerythristic

Replies (11)

Darin Chappell Jul 12, 2006 02:54 PM

Well, you have to understand that genetics probabilities are just that...probabilities. I can flip a quarter and have a 50% chance of having it land heads up, but that is only the probability of the matter. I can actually flip that quarter 1000 times in a row, and it is possible that it lands on tails each time. What is the probability that the 1001st flip will land on heads? Still just 50-50.

So, the fact that you got no amels, when the calculator says you could, is not alone evidence that you never could. The probabilities will frustrate you like nothing else will, if you breed corns long enough.

If your blizzard is het for anery A, and it threw that mutated gene it has at that DNA location (instead of the normal gene it also has there), then that, combined with the mutated gene that your snow had to throw (because he is homozygous for the anery A gene and has no normal gene to offer), then ALL of the babies would be snows het for charcoal.

As for crossing a snow x a banded motley het amel, the expected results SHOULD look something like:

50% amel, het for anery A and motley

and

50% normal, het for amel, anery A, and motley

Hope that helps a bit...
-----
Darin Chappell
Hillbilly Herps
PO Box 254
Rogersville, MO 65742

Kat Jul 12, 2006 03:26 PM

Your blizzard could be homozygous for Anery A, instead of just het. That would give you 100% snows as well.

-Kat
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This Space For Rent

Colorfulcorns Jul 12, 2006 04:58 PM

Is there anyway to prove that?
I know I only had a chance of getting amels but I thought i'd get aleast 1....
-----
CD
Corns(Adults)
1.0 Snow
0.1 Banded Motley het Amel
0.1 Blizzard het Anery A
Corns(Sub-adult)
1.0 Bloodred het Pewter
1.0 Anerythristic

Darin Chappell Jul 12, 2006 05:57 PM

And that is to breed the animal to known homozygous for anery A animals several times. Then, if you ever get even one non-anery A offspring, you could prove that your blizzard was heterozygous for the gene.

If you never did get such an offspring, the chances would be almost certain that your blizzard is also homozygous for anery A. You can probably already know that fairly certainly, depending upon your clutch size (if you had 32 snow babies, for instance...it's nearly certainly so), but there's still that "1001 heads" issue.

Murphy stinks...big time!
-----
Darin Chappell
Hillbilly Herps
PO Box 254
Rogersville, MO 65742

Colorfulcorns Jul 12, 2006 06:39 PM

And what would be known too be a homozygous animal? An Anery?
I kind of understand what you guys mean but I'm still alittle confused....Bare with me....
If I continue breeding them together and only get snows .....then she is homozygous for Anery A....right?
-----
CD
Corns(Adults)
1.0 Snow
0.1 Banded Motley het Amel
0.1 Blizzard het Anery A
Corns(Sub-adult)
1.0 Bloodred het Pewter
1.0 Anerythristic

Darin Chappell Jul 13, 2006 03:03 PM

Yes, breeding to an anery A or to a snow, and repeatedly getting anery A and/or snow babies, will make it more and more likely that your blizzard is homozygous for the anery A mutation and not just het for the gene.
-----
Darin Chappell
Hillbilly Herps
PO Box 254
Rogersville, MO 65742

Colorfulcorns Jul 13, 2006 06:32 PM

...
-----
CD
Corns(Adults)
1.0 Snow
0.1 Banded Motley het Amel
0.1 Blizzard het Anery A
Corns(Sub-adult)
1.0 Bloodred het Pewter
1.0 Anerythristic

Creaturesofthenight Jul 13, 2006 09:55 PM

Colorfulcorns....is this the blizzard female you bought from me? If so, "Powder" as I named her threw all snows and anerys when bred to a ghost het amel. Should have been amels in that clutch too...but there werent.

How the girls doin?

-----
Michelle
Creatures of the Night
Private breeder/fanatic of many morphs of cornsnakes and select Florida Kingsnakes

Colorfulcorns Jul 14, 2006 01:01 PM

Yes it is...she awesome...eats anything...she laid 23 eggs inher first clutch 22 hatched all snows,20 eggs in her second 6 look ok but I'd say only 2-3 will hatch.
The banded motley laid 14 eggs and they will be hatching in about 10 days....
So the Blizzard is het for Anery A not homozygous...right?
Here are some pics of them....
Thanks for the awesome snakes....be trying to find your email to thank you....
First pic-Banded w/ eggs
Second pic-Blizzard w/ eggs
Third pic-Blizzard eggs hatching

-----
CD
Corns(Adults)
1.0 Snow
0.1 Banded Motley het Amel
0.1 Blizzard het Anery A
Corns(Sub-adult)
1.0 Bloodred het Pewter
1.0 Anerythristic

Darin Chappell Jul 14, 2006 02:54 PM

Yep!

If that snake was crossed with a ghost het amel, and produced non-anery babies (as it sounds like it did), then you are assured that the blizzard is indeed only het for anery instead of homozygous for it.

So, it sounds like Murphy just got ya, after all.

Fun, fun...Huh?!?
-----
Darin Chappell
Hillbilly Herps
PO Box 254
Rogersville, MO 65742

Colorfulcorns Jul 14, 2006 06:25 PM

So there is still a "chance" for Amels unless Murphy has something to do with it.....HA HA.....
-----
CD
Corns(Adults)
1.0 Snow
0.1 Banded Motley het Amel
0.1 Blizzard het Anery A
Corns(Sub-adult)
1.0 Bloodred het Pewter
1.0 Anerythristic

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