Respuesta :
More phenotypes than expected may result from polygenic inheritance because of Environmental effects.
What is polygenic inheritance?
A single inherited phenotypic trait that is governed by two or more separate genes is referred to as polygenic inheritance, often referred to as quantitative inheritance.
In a system that is distinct from Mendelian Genetics, wherein monogenic features are determined by the various alleles of a single gene, polygenic traits may exhibit a variety of potential phenotypes, determined by a number of different genes and the interactions between them. In contrast to Mendelian genetics, when one allele completely dominates or hides another, features generated by polygenic inheritance are not only the result of dominance and recessivity. Instead, polygenic features show incomplete dominance, resulting in a combination of the phenotypes seen in the parents in the offspring. Each gene that contributes to a polygenic trait has an equal impact, and each allele affects the phenotype in an additive manner.
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