Relationship between genotype and phenotype in monogenic diseases: relevance to polygenic diseases.

Abstract excerpt

Since the early descriptions of sickle cell anemia, it has been clear that genotype at a single locus rarely completely predicts phenotype. This paper reviews explanations for phenotypic variability in some monogenic diseases. In cystic fibrosis, there is strong correlation between genotype and pancreatic phenotype but only weak association with respiratory phenotype, possibly due to differential inheritance of...

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