Cannabinoid Dominance

Cannabinoid dominance refers to the expression pattern of primary cannabinoids (THC, CBD, CBN, CBC, CBG) in a cultivar's phenotype. Rather than a single strain family, it describes a classification framework used to categorize cannabis genetics by their biochemical profile at harvest. Plants expressing high THC with trace CBD are typically labeled THC-dominant; those showing balanced ratios are termed 1:1 or CBD-dominant types. Lineage records frequently report that cannabinoid ratios are controlled by multiple genetic loci and environmental factors, making phenotypic expression variable even within stable seed lines. This classification system is central to breeding objectives, as different dominance profiles appeal to different end-use categories and research interests.

Breeders select for specific cannabinoid dominance patterns by tracking parental biochemistry across generations and identifying stable segregating lines. Understanding dominance inheritance helps producers consistently deliver cultivars within target cannabinoid windows for seed sales, commercial cultivation, and research applications.