phenotype

n. all of an organism's attributes that are expressed externally (i.e. hair color, skin color, etc.)

The phenotype describes the total physical appearance of an organism, as opposed to its genotype. This genotype-phenotype distinction was proposed by Wilhelm Johannsen in 1911 to make clear the difference between an organism's heredity and what that heredity produces. The distinction is similar to that proposed by August Weismann, who distinguished between germ plasm (heredity) and somatic cells (the body). A more modern version is Francis Crick's Central dogma of molecular biology.
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Noun
1. what an organism looks like as a consequence of its genotype; two organisms with the same phenotype can have different genotypes
(hypernym) constitution, composition, makeup

n. phenotype, all of an organism's attributes that are expressed externally (i.e. hair color, skin color, etc.)

The appearance resulting from the interaction of the genetic makeup of a person with the environment. If a child has the gene for osteogenesis imperfecta (brittle bone disease), minimal trauma can cause fractures. Brittle bones are a principal part of the phenotype of osteogenesis imperfecta.