In basic genetics, which statement best describes the relationship between genotype and phenotype?

• A. Genotype and phenotype are always identical because each allele produces one unique trait regardless of environment.
• B. Genotype is an organism’s allele combination, and phenotype is the observable traits produced by the genotype in a given environment.
• C. Phenotype is determined only by the environment and is independent of genotype.
• D. Genotype refers to observable traits, while phenotype refers to the alleles an organism carries.

Answer: (B)