What does DNA evidence say about Book of Mormon ancestry?

The short answer

The strongest DNA objection is real: Indigenous American populations sampled so far trace most of their ancestry to ancient migrations from northeast Asia, not to a recent, large Israelite founding population. That evidence weighs against reading the Book of Mormon as a demographic account in which Lehi’s family became the principal ancestors of all Native Americans.

It does not tell us the genome of Lehi’s party, measure every past community, or rule out a small migration whose descendants intermarried with much larger populations. But that possibility alone does not demonstrate that such a migration happened. The Church’s own essay says the available DNA cannot decisively prove or disprove Book of Mormon historicity, and that faithful arguments drawn from DNA are speculative too.

A careful reply

“I agree the genetic evidence points strongly to Indigenous Americans’ deep ancestry coming from Asia. That is a problem for the older idea that Lehi’s family founded or substantially populated the Americas. A small migration could leave little detectable DNA, especially after extensive intermarriage, but we do not have genetic evidence that Lehi’s party existed. So DNA does not settle every possible Book of Mormon model. It does mean I should be cautious about claiming the genetics confirm the book.”

The book’s 2006 introduction calls Lamanites “among the ancestors” of American Indians. That change narrows an earlier claim in the introduction. The introduction is not part of the Book of Mormon’s scriptural text.

Sources

• Church essay: Book of Mormon and DNA Studies
• Book of Mormon introduction
• Raghavan et al., “Genomic evidence for the Pleistocene and recent population history of Native Americans” (2015)
• Skoglund et al., “Genetic evidence for two founding populations of the Americas” (2015)
• Moreno-Mayar et al., “Early human dispersals within the Americas” (2018)

The question

Critics point out that the genetic ancestry identified in Indigenous American populations is predominantly connected to ancient populations of Asia, while the Book of Mormon describes migrations from the ancient Near East. They argue that a real, substantial Israelite migration should have left a detectable genetic trace.

The question has force when the claim is that Lehi’s family became the principal ancestors of Native Americans. The answer changes if the proposed migration involved a small group joining communities already established in the Americas. Those are different population claims. DNA evidence bears on both, but it does not bear on them equally.

What the evidence shows

Genome-wide research and ancient DNA support the conclusion that the main ancestry of Indigenous Americans comes from populations that migrated from northeast Asia into the Americas more than 15,000 years ago. These migrations long predate Lehi, whose family in the Book of Mormon leaves Jerusalem around 600 BCE. Studies also describe more than one ancestral contribution or migration in some populations. That complexity is evidence of multiple population histories, not evidence of Israelite ancestry.

Researchers face limits in reconstructing the past. Colonial-era population collapse and admixture changed the genetic record. Some datasets sample only particular populations or inherited lines, and population history remains an active research field. Those limits counsel against pretending that a genetic survey has tested every named group in the Book of Mormon.

The 2015 genome-wide study by Raghavan and colleagues analyzed present-day and ancient individuals. Its authors found that the ancestors of present-day Native Americans entered the Americas from Siberia through a population history involving Beringia. The 2015 study by Skoglund and colleagues found a distinct ancestral signal in some Amazonian groups, related to Indigenous Australians, New Guineans, and Andaman Islanders. That finding adds complexity to population history. It does not identify Israelite ancestry. Neither study identifies an ancient Israelite contribution.

The 2018 ancient-genome study by Moreno-Mayar and colleagues further documents diverse and geographically uneven population histories across the Americas. Genetic evidence supports more than one ancestral contribution in some regions, but the identified ancestry does not supply evidence for an Israelite migration.

What does “no Israelite DNA” mean?

DNA tests do not search for “Book of Mormon DNA” unless researchers have an identifiable comparison sample. No genome from Lehi, Sariah, their traveling party, or the Nephites and Lamanites is available. Geneticists therefore cannot take a reference sample from those groups and ask whether it appears in living descendants.

A modern person can also have an ancestor whose identifiable genetic contribution did not survive in that person’s DNA. Each generation recombines ancestry, and a genealogical ancestor may leave no detectable segment in a descendant. After a small group intermarried with much larger populations over many centuries, the contribution might become difficult to distinguish from other ancestry.

That describes a limit of inference. It does not erase the positive finding that the sampled Indigenous American populations have deep ancestry largely traceable to ancient populations in Asia. Nor does “a small group might leave no detectable trace” provide evidence that Lehi’s group migrated to the Americas. The claim that no surviving marker is expected because the group was small is a possible explanation for missing evidence, not an independent genetic confirmation.

What does the Book of Mormon claim about population?

The Book of Mormon follows several migrant groups and their descendants. It does not say that no one else lived in the Americas. Its narrative describes other populations and people joining the named communities. It also never maps the full geographic extent of the civilizations it describes in a way that can be confidently matched to modern population datasets.

The 2006 revision to the Book of Mormon introduction describes Lamanites as “among the ancestors” of American Indians. This is an editorial statement, not part of the Book of Mormon’s scriptural text. The earlier introduction described them as “the principal ancestors.” That revision reflects a narrower population claim, but it does not by itself resolve the historical question.

An appeal to a small migrant group in a limited area can account for why the group might leave little DNA across all Indigenous Americans. To be explanatory, though, a model needs to specify the group, location, scale of settlement, and predicted evidence. Without those details, DNA has little ability to distinguish it from a population scenario designed after the fact to make a small migration undetectable.

The Church’s essay and responsible limits

The Church’s Gospel Topics Essay on DNA studies acknowledges that the vast majority of Native Americans carry largely Asian DNA. It explains how founder effects, genetic drift, intermarriage, population loss, and later migrations complicate attempts to identify an ancient, relatively small group in present-day DNA. The essay also expressly says that DNA-based claims by defenders are speculative and that DNA studies cannot decisively affirm or reject the book’s historicity.

That conclusion should not be stretched. “DNA cannot decisively reject every possible migration model” does not mean that DNA has no bearing on the Book of Mormon. It bears against models predicting a large, recent Near Eastern founding population. It cannot establish whether a small family group entered the Americas or whether the religious narrative occurred. DNA does not supply a positive identification of Lamanites or Nephites.

A Latter-day Saint answer

“I accept the Book of Mormon as scripture and believe its account of Lehi’s family. The genetic evidence points to ancient Asian-related founding populations as the main ancestors of Indigenous Americans. That creates a real difficulty for the older idea that the Book of Mormon describes the principal ancestors of all Native Americans. The book’s current introduction uses the narrower phrase ‘among the ancestors,’ and its narrative does not claim that no other people lived in the Americas. A small migration could leave little detectable DNA, but no one has identified Book of Mormon DNA. I treat the genetic evidence as a constraint on demographic claims, not as proof of the book.”

The book’s theological claims, historical claims, and spiritual witness can be considered alongside DNA. A thoughtful defense grants what the genetic evidence supports, explains where a particular inference outruns the data, and states plainly where the historical model remains uncertain.

Sources and further study

• Church, “Book of Mormon and DNA Studies”
• Book of Mormon introduction and witnesses
• Raghavan et al. 2015, “Genomic evidence for the Pleistocene and recent population history of Native Americans,” Science
• Skoglund et al. 2015, “Genetic evidence for two founding populations of the Americas,” Nature
• Moreno-Mayar et al. 2018, “Early human dispersals within the Americas,” Science