General Facts e Caused by an abnormality in an individuals genome e Can also be caused by environmental factors e The abnormality can range from minuscule to major 6 Point mutation (P)-insertion/deletion entirely inside one gene G Deletion(D)-removal of a gene or genes e C-whole chromosome extra, missing or both 6 Trinucleotide repeat disorder(T)-gene is extended lengthGeneral Facts Caused by an abnormality in an individual’s genome Can also be caused by environmental factors The abnormality can range from minuscule to major Point mutation (P) – insertion/deletion entirely inside one gene Deletion (D) – removal of a gene or genes C – whole chromosome extra, missing or both Trinucleotide repeat disorder (T) – gene is extended in length