Ms Rowlette initially dismissed the Ancestry.com test that determined Dr Mortimer was her father, but later found her birth certificate with his signature, the Daily Beast reported.
Rowlette was likely expecting to discover new details about her distant ancestors, but she instead learned that her DNA sample matched that of a doctor in Idaho.
When Kelli Rowlette received the results from her Ancestry.com DNA test, she assumed that there had been a mix-up or that the results were flawed, as it claimed her biological father was Mortimer.
Mortimer could not be reached for comment.
The results were more surprising than she expected: The 36-year-old discovered she had been conceived via fertility treatments, something her parents never told her. That man is reportedly Gerald E. Mortimer, a retired obstetrician gynecologist who was also the same doctor who handled Ashby and her husband Howard Fowler's case.
In a statement, Ancestry.com said "DNA testing helps people make new and powerful discoveries about their family history and identity".
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The couple agreed to the procedure, according to the lawsuit, but only if the donor could be a college student who looked like Fowler, with brown hair and blue eyes, and who was taller than 6 feet. "Dr. Mortimer would then inseminate Ms. Ashby with the mixture".
The famous line uttered by Arnold Schwarzenegger in the film Kindergarten Cop was a literal question on the mind of Washington state resident Kelli Rowlette after DNA she sent to genealogy website Ancestry.com yielded a perplexing answer. The suit alleges Mortimer diagnosed Fowler with "a low sperm count and a low sperm mortality" and diagnosed Ashby with a tipped uterus.
In 2016, a doctor was accused of using his own sperm to inseminate his patients after a woman discovered that he was her mother's fertility doctor.
"However with this, people may learn of unexpected connections".
The doctor had recommended mixing the husband's sperm with other matching donors to increase the chances of fertility.
Kelli Rowlette, of Washington state, sent off her genetic sample to the popular genealogy website a year ago but assumed there had been a mistake when the DNA did not match that of her own father.