Genetic disorder which results from the combined action of alleles of more than one gene (e.g., heart disease, diabetes, and some cancers). Although such disorders are inherited, they depend on the simultaneous presence of several alleles; thus the hereditary patterns usually are more complex than those of single-gene disorders. diabetes-a polygenic disease characterized by abnormally high glucose levels in the blood; any of several metabolic disorders marked by excessive urination and persistent thirst Other Examples of polygenic diseases are: Heart disease, Hypertension, Autoimmune disease, Asthma, Osteoporosis, Obesity, Cancer, Schizophrenia etc.
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