Trait Dominance

Trait dominance in cannabis genetics refers to how certain heritable characteristics express more prominently than others when inherited from parent plants. In breeding programs, some terpene profiles, cannabinoid ratios, or morphological features consistently appear in offspring due to dominant alleles, while recessive traits may skip generations or require homozygous pairing. Breeders use trait dominance patterns to predict phenotypic outcomes and stabilize desirable characteristics across multiple generations. Understanding dominance hierarchies is foundational to selective breeding, as it determines which traits reliably pass to F1, F2, and subsequent generations. Documentation of dominant versus recessive expressions helps breeders identify which parent plants are most valuable for consistent lineage development.

Breeders leverage trait dominance mapping to accelerate stabilization of commercial lines and make informed parent selections. When a desired terpene profile or structure shows dominant inheritance, fewer generations are typically needed to fix that trait in a breeding population.