Arnold-Chiari malformation anencephalus 2. What is prenatal diagnosis of genetic disorders, give an example Prenatal diagnosis is testing for diseases or conditions in a fetus or embryo before it is born 3. Describe the symptoms and the genotype of Huntington disease Huntington's disease is a neurodegenerative diseases, The most characteristic initial physical symptoms are jerky, random, and uncontrollable movements 4. analyze the pedigree, what inheritance model do you think? Why? AD 5. analyze the pedigree, what inheritance model do you think? Why? Mitochondrial Section C: Consulting questions(51%) 1. Key points: DMD is XR, Sickle-cell disease is AR 2. Breast cancer is ploy gene disorder, and family history is dangerous factors. thalassemia iS ARArnold-Chiari malformation anencephalus 2. What is prenatal diagnosis of genetic disorders, give an example. Prenatal diagnosis is testing for diseases or conditions in a fetus or embryo before it is born 3. Describe the symptoms and the genotype of Huntington disease. Huntington's disease is a neurodegenerative diseases, The most characteristic initial physical symptoms are jerky, random, and uncontrollable movements. 4. analyze the pedigree，what inheritance model do you think? Why? AD 5. analyze the pedigree，what inheritance model do you think? Why? Mitochondrial Section C: Consulting & questions(51%) 1. Key points: DMD is XR,sickle-cell disease is AR. 2. Breast cancer is ploy gene disorder, and family history is dangerous factors, thalassemia is AR