The accelerating development of biochemical and DNA-based diagnostic tests for human genetic conditions in the last decade has engendered a revolution in genetic diagnosis. Both genetic testing and genetic screening involve the same testing processes to examine an individual's chromosomes, DNA, or the biochemical product of a gene, typically a protein to confirm or refute a suspected chromosomal, DNA, or gene product change. The identification of genetic disorders, and the potential for developing a therapy, is a powerful force in genetics and medicine.
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