P0043000 (păn-jĕn′ĭ-sĭs)n. A theory of heredity proposed by Charles Darwin in which gemmules containing hereditary information from every part of the body coalesce in the gonads and are incorporated into the reproductive cells.pan′ge·net′ic(-jə-nĕt′ĭk) adj.pan′ge·net′i·cal·ly adv. EncyclopediaSeePangenesisMedicalSeepangenesis