A genetic lineage refers to all descendants of a specific genetic sequence or a direct line of ancestry, tracing biological inheritance through DNA, often used in genealogy (family history) or evolutionary biology to map relationships and origins, distinct from a simple family tree by focusing on specific genetic markers like Y-DNA or mtDNA or patterns of DNA segments, revealing deeper ancestral connections. It tracks inherited genetic material (like a specific gene or chromosome segment) across generations, showing how mutations accumulate and differentiate descendants.
