One gene, many phenotypes

From: Journal of Postgraduate Medicine | Date: October 1, 2007| Author: Agarwal, S; Pradhan, M; Prasun, P | Copyright information

Mutations in different genes can lead to similar phenotype e.g., hereditary spherocytosis can be due to mutations in the genes encoding for spectrin, ankyrin, protein 4.2 or band 3. [1],[2],[3],[4] In contrast, defects in a single gene have been implicated in different phenotypes. For example, cystic fibrosis is caused by homozygous/compound heterozygous mutations in the CFTR gene. Mutations in the same gene can lead to isolated congenital bilateral absence of vas deferens (CBAVD). [5],[6],[7...

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