Also, I have food, jewelry, and insect bite sensitivities that react different on the left side of my body, verses on the right side of my body. Some other physical traits I have, that are only on the left side of my body are a double tooth, and everything is slitty bigger on the left side of my body, verse the right side. It’s always visible on my torso, but it can become more or less prominent when my body temperature changes. I’ve been told the second color pigmentation is my twin sisters’ genetic makeup. I was born with a physical trait that causes me to have two different colors of skin pigmentation that split down the center of my torso, front and back, but only on the left side of my body. Chimerism can be difficult to detect with or without a physical trait, but easier with one, than without. Not all chimeras will have an outward physical trait, and you can still be a Chimera not having one. I feel the most interesting aspect of my condition is my physical trait. Because of that, it compromises my immune system making it lower than the average person causing me many autoimmune health issues. Also, I have sensitivities to foods, medications, supplements, jewelry, insect bites etc. This doesn’t mean all Chimeras will or do have health, autoimmune issues or sensitivities. With my particular case of Chimerism, my doctors believe my body reacts to my twins’ DNA and cells as foreign matter. I’ve been told I have two sets of genetic makeup, two sets of immune and blood cells, along with other unusual physical attributes. Due to the fusion, I carry my twins genetic makeup within my own body. Through chromosome testing it was determined I was a girl/girl twin. I’m a fraternal twin who fused together in the womb with my sister. I can say, I Am My Own Twin or I’m a Human Chimera. The term chimera has been borrowed from Greek mythology and has a long history of use in biology and genetics. If human chimeras are more common than hitherto thought there could be many. I was born a human Chimera which is a rare genetic condition, called Chimerism. To date there are no examples in humans of twin chimeras involving germ cells. One genetic expert told BuzzFeed that deliberately testing for chimerism is very difficult, and that there's no real need to do those tests in healthy people.The name Chimera originates from Greek Mythology The definition of Chimera is. Since twin loss occurs in an estimated 21 to 30% of multiple-fetus pregnancies, it's possible that many people are chimeras, but may never find out. Doctors said her extra DNA most likely came from a fraternal twin - and in 2002 her story became a report in the New England Journal of Medicine. Tests said she wasn't the biological mother of her children, but it turned out that the DNA in her blood was different than the DNA in her ovaries. Genetic experts believed he was a human chimera, and he had absorbed some of his DNA from a fraternal twin's embryo, BuzzFeed reported.Ī woman named Karen Keegan wound up in a similar situation. In 2015, a man from Washington took a cheek swab paternity test that said he was technically his son's uncle, not his father. Further testing revealed that the man had different DNA in his saliva and his sperm. Blood and blood-forming tissue is exchanged, and takes up residence in the bone marrow. This happens when fraternal twins share some portion of the same placenta. The most common form of human chimera is called a blood chimera. Account icon An icon in the shape of a person's head and shoulders. Animal chimeras, or mosaics, as they can also be called, don’t usually divide so neatly.
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