The statement which is not true about gene therapy is, that somatic gene therapy only works on individuals.
Gene therapy may be defined as a process through which defective genes are replaced with mutated genes in order to prevent genetic disorders.
During gene therapy, functioning genes are used to replace mutated genes, they can cure any disease, and it is another form of artificial selection.
Apart from somatic gene therapy, germline gene therapy also works on individuals.
Therefore, the statement which is not true about gene therapy is, that somatic gene therapy only works on individuals.
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