Reptile & Amphibian Forums

Thanks in advance if you are able to answer my question. I'm breeding a spider to an albino this season. Let's assume I get spiders het albino out of the breeding attempt. Do I need to breed those back to each other to get a spider albino or can I breed them to regular spiders and albinos?

Breed the spiders het albino back to albinos or anything het albino and you have a shot at spider albinos.

Good luck,
Tom

Tom is right......It has to have an albino gene in order for you to have a chance for albino spiders...

Question...Would breeding a Spider het Albino to an Albino give you better chances of getting an Albino Spider than breeding it to a het Albino?
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Working with an actual Albino instead of a het increases your odds of reproducing Albinos a certain percentage, but I can't confidently explain the exact numbers, what happens with the genes and alleles, and why. I understand it, just don't know how to say it.

With a het x het pairing, each egg would have a 25% chance of producing an Albino.

With a Albino x het pairing, each egg would have a 50% chance of producing an Albino.
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Louis Kirkland
Cornerstone Reptiles

This chart makes absolutley no sence to me. If you breed het X het you get a 25% chance of Albinos. If you breed Albino X het you get a 50% chance of Albinos. It makes sence to me that if you breed Spider het Albino X het Albino you get a 25% chance of Albino Spiders, so if you breed Spider het Albino X Albino it makes sence that you should have a 50% chance of getting an Albino Spider. Am I thinking right or wrong?
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The chart also says you can get a 25% chance of het spiders....and as far as I know there is only co-dom spiders, lol. Good go at it though.

"The chart also says you can get a 25% chance of het spiders....and as far as I know there is only co-dom spiders, lol. Good go at it though."

Most ball python people use "het" as if it meant hidden gene carrier (recessive) or half way to some other morph (codominant). Heterozygous really means having an unmatched pair at whatever gene location you are talking about. Most (and perhaps all) spiders are heterozygous at the spider gene. They have an unmatched pair. They inherited the spider mutant version from one parent and the normal for spider from the other parent.

The chart also talks about homozygous spiders which if the spider mutation type is truly dominant then would look like all the other spiders. If spider is a dominant mutation it would make it more important to understand the difference between a heterozygous spider and a homozygous spider because they would look the same (the definition of a dominant mutation) but produce different spider offspring distributions. However, I've not yet heard proof that homozygous spiders are viable so we can't yet rule out that spider is co-dominant and homozygous lethal.

But by understanding the actual definition of heterozygous you can see how it not only applies to recessive mutations but also co-dominant and dominant should we ever prove a dominant ball python mutation.

That's the biggest problem i think....between a spider x spider breeding is figuring out if you can get a homo spider, on top of that.........

will it live?
will it breed?
will it even hatch????

Personnaly i think having a homo spider (or any homo DOMINATE morph) can be a very powerful addition to a collection. First clutch will be all visuals x what ever other morph you add into the mix, which can help spend things up a bit for certain projects.

Pitoon

Yeah...but I was actually talking "hets" in the since that they don't show the carried gene but only carry it, lol, my bad.

"If you breed het X het you get a 25% chance of Albinos. If you breed Albino X het you get a 50% chance of Albinos. It makes sence to me that if you breed Spider het Albino X het Albino you get a 25% chance of Albino Spiders, so if you breed Spider het Albino X Albino it makes sence that you should have a 50% chance of getting an Albino Spider. Am I thinking right or wrong?"

Spider het Albino x Albino (probabilities per egg)

25% het Albino
25% Albino
25% Spider het Albino
25% Albino Spider

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Louis Kirkland
Cornerstone Reptiles

I thought these were the odds when breeding Spider het Albino X Het Albino.
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"I thought these were the odds when breeding Spider het Albino X Het Albino"

Spider het Albino x het Albino (probabilities per egg)

12.5% Normal
12.5% Spider
12.5% Albino
12.5% Albino Spider
25% het Albino
25% Spider het Albino
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Louis Kirkland
Cornerstone Reptiles

>>"I thought these were the odds when breeding Spider het Albino X Het Albino"
>>
>>Spider het Albino x het Albino (probabilities per egg)
>>
>>12.5% Normal
>>12.5% Spider
>>12.5% Albino
>>12.5% Albino Spider
>>25% het Albino
>>25% Spider het Albino
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>>Louis Kirkland
>>Cornerstone Reptiles

Het albino bred to het albino(whether one is a spider or not)is a one in four chance at albino(25% per egg).

Also,all normals and spiders would still be 66% het for albino.

I think your right with the 12.5% odds of hatching an albino spider(from spider/hetxhet).Since it still has to hit the additional 50% odds on being spider as well as the 25% odds on the albino.
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Charles Glaspie

Het x Het = visual babies & normal looking babies, the normal babies have a 66% of being a het. This is becuase you cannot tell the difference between the Het and normal.

Het x Normal = all normal looking babies, the normal looking babies all have a 50% of being a het, you also cannot tell the difference between them since the het looks like a normal.

if you think my chart was hard to understand try messing with quad, quin, sex, sept charts would look like. Almost like meesing with the lottery!

Pitoon

Thank you all for your help. I get it now.