Genetic Engineers Can Modify Humans

Some genetic engineers are attempting to modify humans. These modifications may one day include replacing defective or nonfunctional alleles of a gene with a functional copy of the gene. If this happens, it might be possible for physicians to diagnose genetic defects in early embryos and fix them, allowing the embryo to develop into a disease-free adult. Recent developments that have led to a much better understanding of the human genome may make this scenario more likely.

Media Activity 7.3 Gene Therapy Using Stem Cells

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