Diathesis

Noun

 * 1) A hereditary or constitutional predisposition to a disease or other disorder.
 * 2) Voice (active or passive).

Thesaurus
Altmann theory, DNA, De Vries theory, Galtonian theory, Mendelianism, Mendelism, RNA, Verworn theory, Weismann theory, Weismannism, Wiesner theory, a thing for, affinity, allele, allelomorph, animus, aptitude, aptness, bent, bias, birth, body-build, brand, cast, character, characteristic, characteristics, chromatid, chromatin, chromosome, complexion, composition, conatus, conduciveness, constituents, constitution, crasis, delight, determinant, determiner, dharma, disposition, eagerness, eccentricity, endowment, ethos, eugenics, factor, feeling for, fiber, frame, gene, genesiology, genetic code, genetics, genius, grain, habit, hereditability, heredity, heritability, heritage, hue, humor, humors, idiosyncrasy, ilk, inborn capacity, inclination, individualism, inheritability, inheritance, kidney, kind, leaning, liability, liking, make, makeup, matrocliny, mental set, mettle, mind, mind-set, mold, nature, patrocliny, penchant, pharmacogenetics, physique, predilection, predisposition, preference, prejudice, probability, proclivity, proneness, propensity, property, quality, readiness, recessive character, replication, sensitivity to, set, slant, soft spot, somatotype, sort, spirit, stamp, strain, streak, stripe, suchness, susceptibility, system, temper, temperament, tendency, tenor, tone, tropism, turn, turn of mind, twist, type, vein, warp, way, weakness, willingness

Etymology
Modern Latin, from διάθεσις:, from διατιθέναι:.