Chimera Ball Python

Huh I knew they could retain sperm but did not know that they could have 2 father’s hmm.

I was wondering though more like the opposite same father but 2 mothers like the chimera was the female but produced 2 different clutches sired by the same father but since she has 2 different genetics (since her and her siblings merged) her sibling could produce eggs even if it’s a single snake much like how a human male fathered a child that actually had his twins DNA material.

Physical sense to make it easy

Male–> normal BP

Female–>chimera (half banana the other half is enchi)

Offspring–> 2 normals, 1 banana, 2pinstripe

Something along that line ^^ hope that explained a bit better sorry guys trying to get my thought process across :relieved:

So… Chris’ video is not entirely correct. I give him credit for trying to explain but he just does not have the right information.

To explain, let me go all the way back to the start. “Paradox” is an ■■■■■■■ term used in the reptile industry/hobby that has no scientific/genetic value. It simply describes an anomalous phenotype, anywhere from a small, nearly undetectable colour/pattern difference all the way up to these extreme 50/50 animals.

The two most common forms of “paradox” that we encounter in the hobby are Mosaics and Chimeras

A mosaic is an animal that has genetically distinct cell lines but they originated from a single zygote.

A chimera is an animal that has genetically distinct cell lines but they originated from more than one zygote/individual

Now… What does that mean? I hear you asking

You breed an Albino to a WT and what you hatch are het Albinos. But one of them has random full Albino patches on it. This happens because, for reasons (I know a number of reasons but I am trying to keep @thecrawdfather’s brain from imploding), the wild-type allele of the gene is lost in a subset of the cells in this animal’s body. So the animals then has two genetically different sets of cells in its body - 2n and 2n-1 - but all of the cells in its body have the same embryo as their origin. This type of “paradox” animal is a mosaic

You breed an Pin to a WT and what you hatch are Pins and WTs. But one of the Pins has random WT patches on it. This happens because, most often, two different fertilized ovum fuse to create a single embryo. This give you an animal with two genetically different sets of cells in its body - 2nw and 2np - that each had an independent origin. This type of “paradox” animal is a chimera.

Make sense?

Now, these bilateral animals are almost assuredly simple mosaics. The first division of the fertilized embryo sets up the left/right asymmetry, so if the chromosomal non-disjunction event happens there then every cell on one side of the animal will have lack one of the alleles while every cell on the other side of the body will have both of the alleles.

This is unlikely to happen. The simple version is that fusion of the two embryos occurs when one essentially engulfs the other. In an easily visualized analogy, one becomes the hotdog and the other becomes the bun. The hotdog then goes on to make most of the internal organs, and the bun becomes the skin and digestive tract. As such, both of the gonads would be made of hotdog.


Thank you for looking out for me bud :joy:

Marked safe*


That was an incredibly informative post I appreciate the time you took to write it out :slight_smile:

Chimera are really fascinating in the respect of genes it’s interesting how humans can be one and not realize it (reminds me of a soap opera). Ultimately it’s a bummer that it can’t be passed on but I suppose that’s the beauty of the anomaly.


No worries, glad it could help to illuminate things :+1:t4:


I’m not really adding to the discussion, I just came across this post on here and thought it would fit nicely…

Unusual Baby


From all that I have seen chimeras are sterile, but I am new to breeding and honestly I have done very little research on chimeras. So I could be wrong…

Wow! I love how informative this is! Thank you for explaining this in a very detailed but easy to understand way


So are all snakes with two different eyes chimeras like Chris mentioned in the video? Or is there also another reason that can cause mismatching eyes? And if it is a chimera, what effect will it have on future breeding?

I’m really curious because my champagne girl has two different eyes. One is really black the other greyish blue. But she doesn’t show any other signs of being a chimera.

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On some morphs there is a higher probability in getting a snake with heterochromia. I don’t know if it’s genetic just that you see it more in some morphs than others so it’s fairly uncommon.

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Normally if it was a true chimera you would have markings on the body to indicate it was. I say it is just a case of heterochromia. It happens in humans and other animals too. The only way to prove anything is a true chimera is through DNA testing though. My firefly BP has eyes that aren’t exactly like each other, with one being lighter than the other, but that doesn’t mean she is a chimera.


No. In nearly every case heterochromia is the result of stochastic gene expression or mosaicism. It will have no impact on how an animal breeds out. Your Champ is not a chimera :slight_smile: :+1:t4:


The real question I wanna know the answer to is; can humans be chimeras? Or any animal for that matter.

Humans can aswel, there are a few known cases.

I’ll try and dig up some links, but I know there is at least one case of a woman giving birth to her sisters babies as a result.

Edit: here we go

Yes, humans and other animals can absolutely be chimera. There are numerous documented cases all across the spectrum


Thank you all for the response. I already didn’t think she is a chimera because it is only her eyes, but the way Chris said it in the youtube video made me get confused.

@eaglereptiles I also saw a youtube video recently about a woman who gave birth to her child and later on because a medical reason she and her child got a bloodtest or something like that and discovered that she could not be the mother of her child. It even had terrible results because they even took the child from her and it all ended up in a huge legal battle to get her child back. After some time she discovered that she was a chimera and when they did a genetic test on other type of cells from the mothers body, that she was the mother of the child. I will try to find the video.

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Paradox or Chimera?


Yes, your animal is a “paradox”

Whether it is a Mosaic or a Chimera is not something that can be absolutely called based on the appearance, you would need a genetic-level interrogation. If I had to place odds I would say likely Chimera


This is one I hatched out. He is getting better with age and size.

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Here is the 50/50 that @mutation_creation has, split exactly down the centre…

You can see more from it at the 30 minute mark here…

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