Phenotype (from Greek pheno-, that means 'showing', and type, that means 'type') is that the term employed in biological science for the composite noticeable characteristics or traits of Associate in Nursing organism. The term covers the organism's morphology or physical type and structure, its organic process processes, its organic chemistry and physiological properties, its behavior, and therefore the product of behavior. Associate in Nursing organism's constitution results from 2 basic factors: the expression of Associate in Nursing organism's order, or its genotype, and therefore the influence of environmental factors. each factors could act, more poignant constitution. once 2 or a lot of clearly completely different phenotypes exist within the same population of a species, the species is named polymorphic. A well-documented example of polymorphism is retriever coloring; whereas the coat color depends on several genes, it's clearly seen within the atmosphere as yellow, black, and brown. Richard Dawkins in 1978[3] then once more in his 1982 book The Extended constitution urged that one will regard bird nests and alternative designed structures like caddis-fly larvae cases and beaver dams as "extended phenotypes".   Wilhelm Johannsen planned the genotype-phenotype distinction in 1911 to create clear the distinction between Associate in Nursing organism's heredity and what that heredity produces.[4][5] the excellence resembles that planned by August geneticist (1834-1914), UN agency distinguished between living substance (heredity) and corporeal cells (the body).

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