To inherit Cystic Fibrosis, which is a genetic disorder, both of the child’s parents had to of had a gene defeat that they passed on to their offspring. A child will inherit this genetic disorder only if he/she inherits both of the defective copies of the gene. The defective gene that causes Cystic Fibrosis is located on chromosome 7. Chromosome 7 controls the normal production of a protein called Cystic Fibrosis Transmembrane Regulator (CFTR). A mutation on this gene leads to defective CFTR production. Which means that the child had a one: four chance of inheriting the disorder and was in that 25%.
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