Institutional glossary definition issued and hosted by National Human Genome Research Institute. Narration credits are distinct from authorship of the glossary definition.
Displayed online update: 14 October 2026. No original publication date or earlier revision history is established.
Cited passages: Definition, sequence change and germline versus somatic transmission; Narration, descendants of affected somatic cells.
Institutional glossary definition issued and hosted by National Human Genome Research Institute. Narration credits are distinct from authorship of the glossary definition.
Displayed online update: 14 October 2026. No original publication date or earlier revision history is established.
Cited passages: Definition, a single base pair added, deleted or changed.