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