diathesis (n.)
- affinity
- allele
- allelomorph
- animus
- aptitude
- aptness
- bent
- bias
- birth
- body-build
- brand
- cast
- character
- characteristic
- chromatid
- chromatin
- chromosome
- complexion
- composition
- constitution
- delight
- determinant
- determiner
- dharma
- disposition
- eagerness
- eccentricity
- endowment
- ethos
- eugenics
- factor
- fiber
- frame
- gene
- genetics
- genius
- grain
- habit
- heredity
- heritage
- hue
- humor
- idiosyncrasy
- ilk
- inclination
- individualism
- inheritance
- kidney
- kind
- leaning
- liability
- liking
- make
- makeup
- mettle
- mind
- mind-set
- mold
- nature
- penchant
- pharmacogenetics
- physique
- predilection
- predisposition
- preference
- prejudice
- probability
- proclivity
- proneness
- propensity
- property
- quality
- readiness
- replication
- set
- slant
- somatotype
- sort
- spirit
- stamp
- strain
- streak
- stripe
- susceptibility
- system
- temper
- temperament
- tendency
- tenor
- tone
- tropism
- turn
- twist
- type
- vein
- warp
- way
- weakness
- willingness