5. genetic disorders caused due to a defective allele of a gene so normal protein
cannot be produced. this may be treated by the following procedure
Obtain DNA sequence for the ‘normal’ allele. Either cut it out from normal
DNA, or, synthesize it from normal mRNA
Insert a normal allele in a vector- liposome or virus. This may require formation
of recombinant DNA
Vector carries ‘ normal allele’ into target cell. Normal allele should be
incorporated into the host DNA, to avoid disruption of other genes
‘ normal allele’ expresses itself and produces a functional protein in the cell.
Symptoms of genetic disorder can be relieved