Explain, at the molecular level, why human genetic diseases oftenfollow a simple Mendelian pattern of inheritance, whereas mostnormal traits, such as the shape of your nose or the size of yourhead, are governed by multiple gene interactions.

Human Heredity: Principles and Issues (MindTap Course List)
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Author:Michael Cummings
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Chapter5: The Inheritance Of Complex Traits
Section: Chapter Questions
Problem 6QP: Describe why there is a fundamental difference between the expression of a trait that is determined...
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Explain, at the molecular level, why human genetic diseases often
follow a simple Mendelian pattern of inheritance, whereas most
normal traits, such as the shape of your nose or the size of your
head, are governed by multiple gene interactions.

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