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A genetic factor that blocks another genetic factor is known as an "epistatic" gene. In this interaction, one gene (the epistatic gene) can suppress or mask the expression of another gene (the hypostatic gene), leading to variations in phenotypic traits. This phenomenon is essential in understanding complex traits and inheritance patterns, as it illustrates how multiple genes can interact to influence observable characteristics. For example, in some plant species, the presence of a dominant epistatic allele can prevent the expression of another allele responsible for flower color.

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1mo ago

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