Phenotype

The observable characteristics of an organism, the expression of gene alleles (genotype) as an observable physical or biochemical trait. See Genotype.

The visible appearance of an individual (with respect to one or more traits) which reflects the reaction of a given genotype with a given environment.

The visible and/or measurable characteristics of an organism (how it appears outwardly) as opposed to its genotype, or genetic characteristics.

The observable traits or characteristics of an organism, for example hair color, weight, or the presence or absence of a disease. Phenotypic traits are not necessarily genetic. See also gene, genotype

The physical characteristics of an organism or the presence of a disease that may or may not be genetic. See also: genotype

The description of the characteristics of a cell, a tissue or an animal; as black and white fur of a mouse are two phenotypes that can be found. The phenotype is determined by the genes (or the genotype) and by the environment. For example, short stature is a phenotype that can be genetically determined (and therefore inherited from the parents), but can also be caused by malnourishment during childhood (and therefore be caused by the environment).