Human Chimeras

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Chimera by appearance, for example, if I have different color eyes of my right eye and left (Heterochromia), probably still gives no problem, even can make me into kind of fashionable look.

But how about chimera by DNA? Read more the article below 😀

One person outside: But two people “inside”: That’s the gist of the chimera, a human being who carries the DNA (and sometimes the body parts) for two. It sounds crazy, but it happens.

In fact, doctors think it probably happens more often than we realize. Unless there were some reason to test the DNA from cells in different parts of your body, you could easily be a chimera and never know it.
Happy Freaky, everybody.

Imagine you’re a fertilized egg, just a few days old. There you are, floating around the womb and minding your own business, when, BAM! You run smack into another just like you. Well, not just like you. But certainly close enough to be a threat.
Now, you have a choice. You can roll over and let yourself be born as just another fraternal twin, or you can stand up for your individuality and absorb the interloper.
Naturally, you do the smart thing, and nine months later your parents take home one healthy baby.

Like a horror-movie villain locked into a three-picture contract, your twin never really died. Instead, she’ll end up hiding in plain sight–within your very cells–rendering you a chimera, a single human who carries the genetic makeup of two different people. Most of the time, there aren’t any outward signs that your body is harboring a stowaway. But when you do notice, things get a little crazy.

There is a woman, who discovered her chimera-ness at age 52. When this woman needed a kidney transplant, she and her two adult children underwent DNA testing to figure out which kid’s kidney would be the best match for mom. Surprisingly, the tests showed neither. In fact, according to DNA, this woman’s children weren’t her children at all.
The case confounded doctors for more than two years until, in 2000, the docs finally realized that this woman’s blood cells carried different genes from the cells in her ovaries—the long-absorbed twin was found.
Perhaps you’re wondering whether chimeras can incorporate twins of two different sexes. The answer is yes, and the results are often much stranger. In 1998, doctors reported treating a teenage boy for an undescended testicle. But when they put the kid under the knife, no second testicle could be found to pull down. Instead, where the ball should have been, doctors discovered an ovary and fallopian tube.
Chimera strikes again.

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