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You and your brother both received the same Y chromosome from your father, and you also gave it to your son.
A property, like height or skin tone, that is influenced by two or more genes is known as a polygenic trait. Polygenic traits do not follow Mendelian inheritance patterns since several genes are involved.
While multifactorial traits exhibit multiple different phenotypes, polygenic traits exhibit a continuous range of phenotypic variance. Polygenic features are based on genetics, whereas multifactorial traits are influenced by both genetics and the environment.
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