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A genetic disorder is a disease caused by abnormalities in one's genome, or genetic material. Genetic disorders are broken down into four different type: single-gene, multifactorial, chromosomal, and mitochondrial. Single-gene disorders are caused by mutations or changes that occur in the DNA grouping of a gene. These disorders occur when cells are unable to produce necessary proteins needed to change certain chemicals into others or to carry substances from one place to another. The cell's inability to carry out these funct