Final answer:
A multifactorial disorder is characterized by the interplay of genetic and environmental factors. These disorders don't follow simple inheritance patterns and include conditions like heart disease and diabetes.
Step-by-step explanation:
A multifactorial disorder is one that has both genetic and environmental causes. This means that a combination of multiple factors including genetics, lifestyle, and environmental influences, interact to cause the disorder. Unlike disorders traceable to a single gene variation (monogenic disorders), multifactorial disorders tend to run in families but do not follow simple rules of inheritance. Examples of such disorders include heart disease, high blood pressure, Alzheimer's disease, arthritis, diabetes, cancer, and obesity.
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