1. Screening and Prevention: People with potential genetic disorders may decide not to have children.
Or they may decide to do in vitro fertilization, and genetically testing the embryos before deciding to implant.
2. Surgery: Some genetic disorders, such as cleft palate, can be surgically corrected after the birth.
3. Environmental Control: Some diseases, such as PKU only become severe if the child is exposed to certain proteins. Parents can control this by limiting the child's exposure to those proteins.
4. Gene Therapy: In this process, the damaged gene is excised (cut out) and replaced by a functional gene (possibly from another species!) This may be able to reverse the damage caused by the defective gene.
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