Florida Mom Tests Her Adopted Daughter’s DNA and Finds a Piece of Ancestry the Two Might Share

Tara Johnson ordered a consumer DNA test for her adopted daughter Agnas, who is 7, and the results came back 23.6 percent Southern Italian. Johnson grew up in a household that treated its Sicilian ancestry as a central part of family identity. The two are not biologically related. The overlap in the estimate still landed as a surprise worth recording, and Johnson posted the moment to TikTok under the handle @tarakole, where she and Agnas read the breakdown on a laptop alongside her oldest daughter, Hallie, who is 13. Johnson told Newsweek the point of testing was never to find a link to herself.

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The expected Lebanese ancestry never appeared

Agnas’ biological mother had told Johnson that Agnas’ great-grandfather was Lebanese. That was the single concrete piece of heritage the family went in holding. The returned percentages contained nothing matching it. The four largest categories were 24.6 percent Scottish and Welsh, 23.6 percent Southern Italian, 19.3 percent English, and 5.8 percent Dutch. Comparatively little had been documented about the biological father’s side, so the family had expected the results to fill that gap rather than contradict the part they thought they knew. Johnson’s response was not to discard the family account. She decided to test again with a second company.

What an ancestry percentage is actually measuring

A consumer test does not read a family tree. It compares hundreds of thousands of points along a customer’s genome against reference panels, which are groups of people whose own grandparents all came from one documented region. The output is a probability statement about which panels the pattern most resembles. Southern Italy and Lebanon sit on opposite ends of the Mediterranean and have exchanged populations for thousands of years, which means the underlying genetic signals overlap. A small, older contribution can be absorbed into a larger neighboring category rather than appearing under its own heading.

One great-grandparent is about 12.5 percent of a genome

The arithmetic explains part of what Johnson saw. A person inherits roughly half their DNA from each parent, a quarter from each grandparent, and about an eighth from each great-grandparent. If Agnas’ Lebanese ancestor sat at the great-grandparent level on her biological mother’s side, the expected contribution would be in the range of 12 percent, and inheritance is random enough that the real figure could land well below that. Push the same ancestor back one more generation and the expected share drops to roughly 6 percent, small enough to be folded into a broader regional estimate or to vanish from the report entirely.

Why a second company can return different numbers

Johnson’s plan to retest elsewhere is a reasonable one, because competing services do not share reference panels. AncestryDNA, 23andMe, MyHeritage, and FamilyTreeDNA each build their own, drawing on different volunteer populations and dividing the map into different regions. One company may report a single Southern European category where another splits Southern Italian from Greek and Balkan. Companies also revise estimates after the fact. 23andMe and AncestryDNA have both pushed updates that changed existing customers’ percentages overnight without any new saliva sample, because the panel behind the comparison had grown.

Johnson treats the result as an estimate, not a verdict

Johnson said plainly that these tests offer estimates rather than definitive answers about identity or family history. That framing matters more in adoption than in most cases, because the report may be the only written record a child has of a branch of their family. Her stated approach is to hold the percentages loosely and keep gathering. The second test is one source. The family’s open relationship with Agnas’ biological relatives is another, and the oral account about the Lebanese great-grandfather stays on the table rather than being overwritten by a printout.

The family keeps contact with Agnas’ biological relatives

The Johnsons maintain an open relationship with several members of Agnas’ biological family, including her biological mother, her brother, an aunt, and cousins. Johnson described the goal as Agnas growing up without being asked to choose between the people who love her. That is the practical version of what the DNA test was reaching for. The percentages gave a rough map of regions. The ongoing contact gives names, voices, and the kind of detail no laboratory produces, including the account of the Lebanese great-grandfather that prompted part of the family’s interest in testing.

Johnson’s stated reason for testing was not connection

The shared Southern Italian result reads like the headline, but it was not the goal. Johnson told Newsweek that when Agnas became part of the family, she arrived with a history that existed long before them, and that celebrating it mattered as much as the part of her story that began at the adoption. Growing up proud of being Sicilian had given Johnson a sense of belonging she wanted all four of her children to have. The overlap was incidental to that project. She called it a fun and unexpected surprise rather than the thing being looked for.

Unexpected results are common enough to have a research record

Researchers have studied what happens when consumer tests contradict what people believed about their families. A 2020 study in the journal Genetics in Medicine, led by Christi Guerrini at Baylor College of Medicine, surveyed people who learned of unexpected parentage through direct-to-consumer testing and documented a wide range of reactions, from distress to relief. The American Society of Human Genetics has published guidance noting that these services can reveal misattributed parentage and unknown relatives. Johnson’s case is a milder version of the same phenomenon: the surprise was an absence rather than a revelation.

The line Johnson drew between ancestry and family

Johnson’s summary of the whole exercise was that DNA can describe ancestry but cannot measure love, belonging, or the bonds people build. She put it in terms of story rather than biology: Agnas did not begin a new story when she joined the family, her story grew, and so did theirs. The Southern Italian figure sits inside that framing rather than above it. If the second test returns different numbers, which the panel differences in slide 5 make likely, the thing the first test was actually for stays intact. The percentages were always the smaller half of the question.