(a) (Collection of) methods that allows correction of gene defect that has been diagnosed in a child/embryo/Here the genes are inserted into a person's cells and tissues to treat a hereditary disease. It compensate the non-functional gene this involves delivery of a normal gene into the individual/embryo to take over the function of non-functional/a defective gene.
(b) If the desired gene is isolated and introduced into cells at early embryonic stages it can provide a permanent cure.
ADA/Adenosine deaminase deficiency.
