Lydia Fairchild is an American woman who exhibits chimerism, with two different sets of DNA present in her body. She was pregnant with her third child when she and the father of her children, Jamie Townsend, separated. When Fairchild applied for child support in 2002, she was requested to provide DNA evidence that Townsend was the father of her children. While the results showed Townsend was certainly the father of the children, the DNA tests indicated that she was not their mother.
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