Wild-type mice have brown fur. You have two strains of pure breeding mutant mice, both of which have white fur. When you cross the two strains with each other, all of the progeny have wild-type brown fur. What does this genetic complementation tell you?.

A set of an organism's visible qualities or characteristics is referred to as the phenotype in genetics. The phrase includes an organism's morphology, or physical shape and structure, as well as its physiological and biochemical characteristics, behavior, and the outcomes of behavior.

The expression of an organism's genotype, or genetic makeup, and the impact of environmental circumstances are the two fundamental components that determine its phenotype. Both elements may interact, which would further influence phenotypic. A species is considered polymorphic if there are two or more phenotypes that are visibly distinct within the same population. The color of Labrador Retrievers is a well-known case of polymorphism; while the coat color is determined by a number of genes, it is readily apparent in the environment as yellow, black, and brown.

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