Book of Mormon Evidence · Answering Critics

Critics say DNA disproved the Book of Mormon. The 2026 edition looks at what the book actually claims, what genetics can and can’t see, one honest correction on X2, and the test nobody runs on the Bible.

About 2,000 words · 9-minute read

Every few months someone announces that DNA has finally buried the Book of Mormon. The argument fits in a tweet: most Native American DNA points to East Asia, the Book of Mormon says Israelites came to the Americas, so the book is false. Case closed, pass the popcorn.

There’s one problem. The argument tests a claim the Book of Mormon never makes, with a tool that can’t see the people it’s looking for. And it holds the Book of Mormon to a genetic standard nobody applies to the Bible.

Back in April 2025 we asked Does DNA Evidence Disprove the Book of Mormon? This 2026 edition goes further. It looks at what the text actually says, what population genetics can and can’t detect, one honest correction on haplogroup X2, and the double standard hiding in the whole debate.

The argument needs an assumption the book never makes

For the DNA argument to work, Lehi’s family has to be the main ancestors of Native Americans, leaving a strong Near Eastern signal across the hemisphere. No signal, no Lehi.

But the Book of Mormon never says that. Its introduction says the Lamanites “are among the ancestors of the American Indians” (Introduction to the Book of Mormon). Among. The Church’s Gospel Topics essay on the subject is blunt: “The Book of Mormon itself, however, does not claim that the peoples it describes were either the predominant or the exclusive inhabitants of the lands they occupied” (Book of Mormon and DNA Studies).

This isn’t a new retreat. In April 1929, long before anyone sequenced a genome, President Anthony W. Ivins of the First Presidency said: “The Book of Mormon … does not tell us that there was no one here before them [the peoples it describes]. It does not tell us that people did not come after” (quoted in the essay).

So the critic is grading an exam the book never took. The real question is whether a small family from Jerusalem, arriving around 600 BC, could leave a signal we can detect today.

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The Book of Mormon’s own population clues

Read closely, the book keeps hinting that Lehi’s family wasn’t alone. When Mosiah led his people out of the land of Nephi, they found a whole nation already there:

And they discovered a people, who were called the people of Zarahemla.

Omni 1:14

These people came from Jerusalem in a separate migration, and “at the time that Mosiah discovered them, they had become exceedingly numerous” (Omni 1:17). Later the book says it outright:

Now there were not so many of the children of Nephi, or so many of those who were descendants of Nephi, as there were of the people of Zarahemla, who was a descendant of Mulek, and those who came with him into the wilderness.

Mosiah 25:2

In the Book of Mormon’s own pages, Nephi’s descendants are outnumbered in their own kingdom. The labels shift too. Early on, Jacob says he will call “Lamanites” anyone “that seek to destroy the people of Nephi” (Jacob 1:14). Centuries later the book separates dissenters who “had taken upon themselves the name of Lamanites” from “real descendants of the Lamanites” (Helaman 11:24). “Lamanite” becomes a political label, not a DNA test.

That’s why many Latter-day Saint scholars read it with a limited geography in mind: a real people in a limited region, living next to others. (The Church takes no official position on geography beyond the Americas.) See Limited Geography and Population and Are Native Americans “Lamanites”? on Galatians18.

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Nobody knows what Lehi’s DNA looked like

To find Lehi’s DNA, you need to know what Lehi’s DNA was. Nobody does. As I put it on X, “we don’t know where many of the people of the BoM were from to get a picture of what the DNA would be… even without thousands of years of drift” (@TraviXai). The essay agrees: “Nothing is known about the DNA of Book of Mormon peoples.”

Lehi, Sariah, Ishmael and his family, and Zoram could have carried lines nobody would guess from their hometown. The essay gives a real example. Ugo Perego, a Latter-day Saint population geneticist, is a multigeneration Italian, but his paternal line belongs to a branch of haplogroup C, an Asian/Native American lineage. If his family settled an isolated island, future geneticists might conclude the island was settled from Asia. Geneticists call that the founder effect.

Now look at Lehi’s own family tree. He was “a descendant of Manasseh” (Alma 10:3). And who was Manasseh’s mother?

And unto Joseph were born two sons before the years of famine came, which Asenath the daughter of Poti-pherah priest of On bare unto him.

Genesis 41:50 (KJV)

The firstborn of those two sons was Manasseh (Genesis 41:51). The tribe Lehi came from started with an Egyptian mother. Anyone who claims to know exactly what “Israelite DNA” Lehi should have carried is claiming more than the Bible tells us.

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Small group, big continent: drift and bottlenecks

Say we did know Lehi’s exact DNA. It still might not survive. The essay walks through three forces:

  • Admixture. When a small group marries into a much larger one, its markers can become “so diluted that they cannot be reliably identified.”
  • Genetic drift. Rare lines disappear by chance. In Iceland, where genealogies are unusually complete, most people living today inherited their mitochondrial DNA from a small fraction of the people living there just 300 years ago.
  • Bottlenecks. War and disease kill off whole lineages. The Book of Mormon ends in a catastrophic war, and after 1492 native populations fell by as much as 95 percent. Molecular anthropologist Michael Crawford wrote that the conquest “squeezed the entire Amerindian population through a genetic bottleneck” (cited in the essay).
Four-stage diagram: a small founding group with unknown DNA joins a larger population, its markers thin out through genetic drift over 100-plus generations, and a bottleneck from war and disease leaves almost none.
How a small founding group can vanish from the DNA record: founder effect, admixture, drift, and bottleneck. Original graphic by thebookofmormon.ai, based on the Gospel Topics essay “Book of Mormon and DNA Studies.”

There’s also the math of time. From 600 BC to today is about 2,600 years, more than 100 generations at 25 years each. Population geneticist Graham Coop shows you only have to go back about nine generations before a given ancestor quite likely left you none of your autosomal DNA (Coop Lab, 2013). Someone can be your real ancestor and leave no trace in your genome.

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What mtDNA and Y-DNA can and can’t show

The early DNA debate leaned heavily on mitochondrial DNA (mtDNA) and the Y chromosome. Both are useful tools, but each follows a single thread. mtDNA comes from your mother’s mother’s mother. The Y chromosome comes from your father’s father’s father.

Fan chart of ten generations of ancestors. Only the far-left wedge in each ring (the father’s-father line, Y-DNA) and the far-right wedge (the mother’s-mother line, mtDNA) are highlighted. The other 1,022 slots in the tenth generation are gray.
Ten generations back you have 1,024 ancestor slots; mtDNA and Y-DNA each trace one. Original graphic by thebookofmormon.ai.

Go back ten generations and you have 1,024 ancestor slots. Those two tests see two of them. If one of Lehi’s granddaughters married into a local family, her line could carry on for centuries and never show up in either test. A missing haplogroup tells you about one thread, not the whole family.

Dating is fuzzy too. The essay explains that the “molecular clock” used to date these markers “is not sufficiently sensitive to pinpoint the timing of migrations that occurred as recently as a few hundred or even a few thousand years ago.” And the field itself expects surprises. Commenting on a 2010 study, Stanford geneticist Marcus Feldman said, “Models that suggest a single one-time migration are generally regarded as idealized systems. … There may have been small amounts of migrations going on for millennia” (quoted in the essay).

So the honest scientific bottom line, in the essay’s words: “DNA studies cannot be used decisively to either affirm or reject the historical authenticity of the Book of Mormon.” More on Galatians18: DNA and the Book of Mormon.

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A 2026 correction: don’t hang Lehi on X2

If we ask critics to be fair, we have to be fair too. Our 2025 post leaned on mitochondrial haplogroup X2, found in some Native American groups around the Great Lakes, and it still gets shared online as a “Lehi marker.” The research points the other way.

In 2015, the genome of Kennewick Man, a skeleton from Washington state dated to about 8,340–9,200 calibrated years ago, was sequenced. His mtDNA sits “at the root of haplogroup X2a” (Rasmussen et al., Nature 2015). That’s thousands of years before Lehi. Geneticists Jennifer Raff and Deborah Bolnick added that “X2a has not been found anywhere in Eurasia” and that the evidence fits the same ancient Beringian migration as the other founding lineages (Raff and Bolnick, PaleoAmerica 2015).

So X2 isn’t Lehi’s fingerprint, and we shouldn’t say it is. The essay warns that “arguments that some defenders of the Book of Mormon make based on DNA studies are also speculative.” That cuts both ways. If DNA can’t confirm Lehi, it can’t rule him out either. The correction doesn’t help the critic; it puts everyone back at “genetics can’t see a family this small, this long ago.”

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Nobody DNA-tests Abraham

Now flip it around. Nobody demands an “Israelite haplogroup” before believing Abraham left Ur or Israel left Egypt. The Bible itself shows why that test would be hopeless. Israel left Egypt with “a mixed multitude” (Exodus 12:38). Moses married Zipporah the Midianite (Exodus 2:21) and “an Ethiopian woman” (Numbers 12:1). Joseph married an Egyptian (Genesis 41:45). Jesus’ own genealogy includes Rahab of Jericho and Ruth the Moabitess:

And Salmon begat Booz of Rachab; and Booz begat Obed of Ruth; and Obed begat Jesse;

Matthew 1:5 (KJV)

Ancient DNA from the region tells the same story of mixture. A 2020 study of 73 Bronze and Iron Age individuals from the southern Levant found that people of the “Canaanite” material culture descended from both earlier local populations and newcomers related to the Zagros or the Caucasus (Agranat-Tamir et al., Cell 2020).

Yet the critic who would never say “no Hebrew haplogroup, no Exodus” turns around and says “no Hebrew haplogroup in America, no Lehi.” Same missing evidence, opposite conclusion. That isn’t science. It’s a double standard wearing a lab coat.

He that answereth a matter before he heareth it, it is folly and shame unto him.

Proverbs 18:13 (KJV)

DNA joins a long line of “gotchas” that looked strong until someone read the fine print, like the shrinking anachronisms list and “No Archaeological Evidence”. For the positive case, start with The Best Book of Mormon Evidences, in One Place.

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Key takeaways

  • The Book of Mormon never claims Lehi’s family were the only or main ancestors of Native Americans. Its introduction says “among the ancestors.”
  • The text itself shows others in the land: the people of Zarahemla outnumbered the Nephites (Mosiah 25:2), and “Lamanite” became a political label.
  • Nobody knows what DNA Lehi’s party carried, and his own tribe began with an Egyptian mother (Genesis 41:50–51).
  • Founder effect, admixture, drift, and bottlenecks can erase a small group’s signal over 100+ generations, and mtDNA and Y-DNA each trace only one line.
  • X2 isn’t Lehi’s marker. DNA can’t confirm him, and it can’t rule him out.
  • Critics don’t demand an “Israelite haplogroup” to believe the Bible. The same standard should apply to the Book of Mormon.
Keep the conversation going

Next time someone says DNA disproved the Book of Mormon, ask two questions: “Where does the book say Lehi was the only ancestor?” and “What was Lehi’s DNA?” Then invite them to run the test the book actually offers in Moroni 10:4. For quick, sourced answers to common attacks, open Galatians18, and follow me on X at @TraviXai for daily answers.

Sources

  • Featured image and diagrams: original graphics by thebookofmormon.ai (no photographs or likenesses of real people).