TRUTHS
- Relationships: Tests can reliably confirm close biological relationships (parent/child, siblings, half-siblings, cousins).
- Broad Ancestry: DNA results can show your origins at the continental or regional level (e.g., West African, Irish, Indigenous American).
- Health & Traits: Some tests identify genetic traits (e.g., lactose intolerance, hair color tendencies) or carrier status for specific conditions.
- Genealogical Power: DNA can reveal cousin matches, point to unknown ancestors, and confirm paper-trail research.
- Autosomal DNA atDNA → all family lines (5–7 generations).
- Y-DNA → direct paternal line.
- mtDNA → direct maternal line.
FALLACIES
- Exact Ethnicity Percentages: Results like “23% Scottish” are only estimates. They change as databases grow.
- DNA Equals Identity: DNA does not determine culture, nationality, or tribal affiliation. It shows inheritance only.
- Guaranteed Ancestor Identification: A DNA match suggests a shared ancestor but does not name them. Records are still essential.
- Full Health Picture: Consumer tests cover only a few common variants. A negative result ≠ no risk.
- Absolute Privacy: DNA data is not completely private—companies may share data for research, and it can be used in legal cases.
BOTTOM LINE
- DNA testing is a powerful tool, but not a complete answer.
- Use it with traditional genealogy research for the most accurate results.
- Think of DNA as a map: it shows where to look, but not the whole journey.
