phenotype By Ivan Suarez Robles 08 Feb, 2011 The physical characteristics displayed by an organism; results from interaction between the genotype and the environment.Related Articles: Identification of Genetic Modifiers that Alter Clinical Onset of Huntington’s DiseaseStem Cell Research Provides Insight on HD Development and Potential Therapeutic TargetsDrs. James Gusella and Marcy MacDonaldThe Scientific ApproachVitamin C