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I think there was a similar case, but about the mother. The courts took her baby and she was on trial for kidnapping.
Eventually a geneticists saw it on the news and suggested she got tested again using DNA samples from other parts of her body and they found out she also was a chimera.
Some racism was involved as she was working class and black, so the courts were just looking for a reason to take her baby and throw her ass in jail..
Some racism was involved
Not surprised after reading the first paragraph
I remember that one, it was the first time I heard of this scenario. It really sucks for folks involved, but it is kind of interesting too.
Yes, it was the case of Lydia Fairchild
From Wikipedia
Fairchild stood accused of fraud by either claiming benefits for other people's children, or taking part in a surrogacy scam, and records of her prior births were put similarly in doubt. Prosecutors called for her two children to be taken away from her, believing them not to be hers. As time came for her to give birth to her third child, the judge ordered that an observer be present at the birth, ensure that blood samples were immediately taken from both the child and Fairchild, and be available to testify. Two weeks later, DNA tests seemed to indicate that she was also not the mother of that child.
A breakthrough came when her defense attorney,[1] Alan Tindell, learned of Karen Keegan, a chimeric woman in Boston, and suggested a similar possibility for Fairchild and then introduced an article in the New England Journal of Medicine about Keegan.[2][3] He realized that Fairchild's case might also be caused by chimerism. As in Keegan's case, DNA samples were taken from members of the extended family. The DNA of Fairchild's children matched that of Fairchild's mother to the extent expected of a grandmother. They also found that, although the DNA in Fairchild's skin and hair did not match her children's, the DNA from a cervical smear test did match. Fairchild was carrying two different sets of DNA, the defining characteristic of chimerism.
Apparently this is more common with cats. If you see a cat with two different coat patterns, either divided down the middle or along the neck (as if they only had spare parts left at the cat factory), they may also be a chimera.
Venus!!! I love Venus. She long predates AI for the curious. She's an ig celeb.
I saw this one too the other day on the other site, I think.
Half scraggle muffin, half had enough of your shit.
Cool looking cat. I wants one
I wonder... is this more common in all animals that have average litter size >= 2? Or is there something else special to cats that explains this phenomenon?
In-utero growth rate + chromosome counts play a big role. I admit, ashamedly, that I have largely forgotten the reason they matter, but they do.
Source, trust me bro
"Source, trust me bro"
Seems legit to me. I trust you as an authoritative source on the subject.
Half and half chimera is just the more unique variant, iirc, at least for humans. The more common type would just look splotchy if the different parts even happen to color differently. The patterns usually follow Blaschko's lines but don't have to.
There are also more basic forms where people will just have certain body parts with different DNA, like an extra blood type or other less consequential things.
There was a woman who went to prison for this, her chimera baby's dna contradicted her story, I think to get public assistance of some kind, and the dna test convinced the state assholes she was lying and they sent her to prison, I think some researchers exonerated her eventually.
Are you thinking of Lydia Fairchild? In her case she wasn't sent to prison. However, her two children were taken from her and placed in foster care. Lawyers had refused to represent her at first, due to the belief that DNA evidence is too strong to fight. On the plus side, she became pregnant again. So a court officer was present during her third child's birth.
Despite being at the birth and witnessing blood draws from both mother and child, the court still claimed she was being untruthful somehow. Thankfully, that birth and its evidence were peculiar enough to attract a lawyer to finally represent her. Only after that did the investigation into potential chimerism arise.
More info here - https://embryo.asu.edu/pages/case-lydia-fairchild-and-her-chimerism-2002
Another fun-ish, kinda fucked up, weird story... There's a woman, Henrietta Lacks, who had a biopsy for her cervical cancer in January of 1951 before passing in October of that year. These cells were found to be incredibly resilient and quick to replicate. Most cells only lasted a few days before dying, but hers seemed to be functionally immortal under controlled lab conditions.
So, unbeknownst to her as consent wasnt required for such things at the time, her cancer cells were cultured and grown into large samples to be used in research. Those samples were split off and passed off to other labs. They've since spread around the entire world for a ton of research and commercial purposes.
They were used in the development of the polio vaccine, for example, as well as having been used in research on cancer (obviously), AIDS, the effects of radiation and toxic materials, gene mapping, etc. They are used to test safety of cosmetics as well. Approximately 11,000 patents involve these specific cancer cells.
In the 1970s, there was an incident where these cells contaminated other cell cultures, so the researchers needed DNA samples from the Henrietta's family to differentiate her cells from the others. This is the first time anyone in her family learned that her cells had been used in research at all, let alone that her cells were being cloned and used in research and commercial product development across the entire world. It became a legal issue after this, and after a couple decades of litigation, it made it to the Supreme Court of California where they ruled that "discarded biological materials" is no longer ones property and could be commercialized freely. They continue to occasionally fight against aspects of her cells' usage, and they're are health privacy concerns for her family as well, but results have been mixed for them.
Henrietta the person died in 1951 at age 31, but her immortal cancer cells which still contain her full DNA sequence continue to live to this day, 75 years later. One source claims that as much as 50 million metric tons of tissue has been generated from these cells.
HeLa is extremely interesting, but still requires humans to cultivate her cells.
Canine transmissible venereal tumor however, is an immortal, contagious dog tumor from a dog thousands of years ago that evolved into its own lifeform - a sexually transmitted parasitic cancer - that has continued to this day to spread from host to host. Yet, genetically, it is still "dog".
Anyway, this is my answer when the job interviewer asks me about long-term goals.
In the 1970s, there was an incident where these cells contaminated other cell cultures, so the researchers needed DNA samples from the Henrietta's family to differentiate her cells from the others.
I don't understand. First, what was the point? I doubt there was a way to split the sample attacked by a cancer cells, they probably weren't going to recalibrate the transporter and untuvix them.
Second, weren't there thousands of the copies of the sample? Why wouldn't they compare it to one of them, instead of bothering the family?
That confused me as well. The stuff I read didn't elaborate on how that would help.
I worked with HeLa cells as a molecular biology student. The ethics weren't a great look, and I'm happy that today there has to be informed consent for stuff like that.
Without having an immortalized cell line like this genetics would have taken even longer to get going tho, and she's actually one of the few people whose genes will be preserved for near eternity. Creepy, but it's closer to actual immortality than any of us will ever be.
That means every time that guy has masturbated in his life he was really jerking off his dead brother.
Hey now his brother has never been more alive.
I'm a data analyst at a medical nonprofit, primarily doing analyses on germline variants for rare forms of cancer. I'm new to this kind of work, but had a decent educational background in biology.
Something I've learned is that genetics are complicated as hell. A single gene can produce multiple different proteins, and proteins change over time due to somatic variation. Only 1% of the genome are protein coding, called exomes. Exomes can be affected by variations to start and stop codons, non coding regions, and untranslated regions. There are entire fields dedicated to studying genome-wide, exomics, transcriptomics, proteomics, phenomics, and probably several others that I don't know about. The amount of data involved with these fields is in the tebibytes region. Have you ever seen a "small" 3GiB csv? I have. The filtered and cleaned data frames created by genetics are over 100 columns wide and have nearly 5 million entries.
There are companies creating artificial life by generating custom chromosomes. There's a whole field of computer science dedicated to biological computing, using DNA as a storage medium. There are companies dedicated to simply classifying genes.
DNA is cool as hell.
There are companies creating artificial life by generating custom chromosomes.
My dude, not a fun thing to think about who might have control over that. Is it a musk, zuck, cook or epstein?
No, none of those guys are involved afaik. The one that made the first breakthrough in artificial life is ran by the same dude who competed with the Human Genome Project to map 99% of the human genome. They modified an extremely simple bacteria that only had something like 300 base pairs
If you really want to blow your mind, look into the theoretical alternatives to DNA. we are all taught about RNA and how it is a precursor to DNA, but what if it went another way? Look up PNA, PNA-O, or even GNA. If life existed on other worlds, there is a decent chance it follows an xNA structure, but not necessarily DNA.
To add that the general understanding of how DNA works and is used can be scary, just like other measurements. I bet there's still a lot of people that believe fingerprint analysis is some kind of rock solid science based evidence, but my understanding is that it's very much prone to errors and interpretation.
I don't mean to say that DNA analysis suffers the same flaws, just trying to illustrate with an example.
I hate the generalized concept of "AI", but I love the concept of "Machine Learning"
If you think LLMs are good at anything, I am almost 100% certain to disagree with you about pretty much everything, to help you understand this distinction.
Anyhow, some computer scientists found that a machine learning algorithm could predict beyond a null hypothesis that A fingerprint belonged to a person given a different fingerprint (different finger but still same person)
"Criminology" expers were just like "no, it's settled science"
This is the state of discourse.
why do I even feel the compulsion to preface by saying my bit about ai and llms?
how tf is "settled science" even a concept in a science
There was a similar case of a woman who absorbed her twin brother in the womb. Only a small patch of cheek had her brothers DNA, but that is exactly where DNA is taken from when they want to take a DNA sample. This was discovered when she took a DNA test which came up as male.
Why does this make DNA scary? I think it's awesome that our understanding of DNA makes us able to unravel things like this.
Imagine your dead twin using your penis to impregnate your wife with his DNA.
"You may have defeated me in the womb brother, but I impregnated your wife. I win."
Part 3 DIO be like.
I think they are saying this dude is so cuck that he is raising his wife and non-existent brothers child.
The last time I did a deep dive on the research, they estimated somewhere around 3% of the population had some form of chimerism, and I calculated my personal chances around 6%. And then I did some family research and anecdotal evidence pushed that number much higher, including being a single born twin.
One of the articles I recall postulated the number is much higher than 3% due to the condition only being confirmed or discovered through rare circumstances that result in multiple genetic testing.
As someone who has undergone extensive genetic testing, we're still in the dark ages of medicine. We basically know nothing at all about jack.
The must of truly love that woman to keep getting tested. The average man would nope out once it came back kid wasn't his.
Sometimes you just know when your best friend is telling the truth. :)
The must of truly
Quick! Raise both arms!
Reminds me of when President Vic Michaelis asked Hank about who has the most DNA.
