Phenotype Vs Genotype

Phenotype and genotype are foundational concepts in cannabis breeding that describe two distinct layers of plant expression. Genotype refers to the complete genetic code inherited from parent plants—the underlying blueprint that remains constant throughout a plant's life. Phenotype is the observable physical expression of that genetic code, shaped by both genetics and environmental factors like light, temperature, nutrients, and growing conditions. A single genotype can produce multiple phenotypes depending on cultivation variables, which is why identical genetics grown in different environments may display varying terpene profiles, plant structure, and cannabinoid ratios. Understanding this distinction is critical for breeders seeking stable, reproducible strains and for cultivators aiming to maximize desired traits.

Breeders stabilize phenotypes through selective breeding to ensure genetic lines reliably express desired traits across generations and growing conditions. Distinguishing phenotype from genotype helps identify which characteristics are fixed (genetically determined) versus environmental, allowing for targeted selection of parent plants that will consistently produce desired terpene and structure p