Which role do reference family or maternal lineages play in identifying remains?

Which role do reference family or maternal lineages play in identifying remains?

• A. They provide a genealogical link to relatives to support presumptive identification
• B. They determine the age of remains
• C. They measure diet of the individual
• D. They replace genetic analysis

Answer: (B)

Maternal lineage testing uses mitochondrial DNA, which is inherited from the mother to all her children with little change over generations. Because mtDNA is present in many copies per cell and tends to survive better in degraded remains, it can be recovered even when nuclear DNA is poor or unavailable. By comparing the mtDNA sequence from remains with that from a known maternal relative, investigators can determine whether they share the same maternal line. This provides a genealogical link that supports presumptive identification, especially when other genetic data are limited or when a direct autosomal or nuclear DNA match isn’t possible. This method doesn’t reveal how old the person was or what they ate, so it isn’t used to determine age or diet. It also doesn’t replace comprehensive genetic analysis; it serves as an additional line of evidence to support identification conclusions, often alongside nuclear DNA testing when feasible.

Maternal lineage testing uses mitochondrial DNA, which is inherited from the mother to all her children with little change over generations. Because mtDNA is present in many copies per cell and tends to survive better in degraded remains, it can be recovered even when nuclear DNA is poor or unavailable. By comparing the mtDNA sequence from remains with that from a known maternal relative, investigators can determine whether they share the same maternal line. This provides a genealogical link that supports presumptive identification, especially when other genetic data are limited or when a direct autosomal or nuclear DNA match isn’t possible.

This method doesn’t reveal how old the person was or what they ate, so it isn’t used to determine age or diet. It also doesn’t replace comprehensive genetic analysis; it serves as an additional line of evidence to support identification conclusions, often alongside nuclear DNA testing when feasible.