Polygenic Disorder

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Disorders From Mom and Dad Genetic disorders are disorders caused by a mutation in genes. Some genetic orders are caused by errors during meiosis. Examples include Downs Syndrome and Turner Syndrome. Inheriting defective genes from the parents can also cause genetic disorders. An example of an inherited genetic disease is Huntington’s disease. Genetic disorders are also divided into Single gene disorders and polygenic disorders. Single gene disorders are caused by one gene being mutated. Polygenic disorders are believed to be associated with many genes along with daily habits and environmental factors. Polygenic disorders are disorders that may be caused by the effects of genes inherited from mom and dad along with lifestyle…show more content…
“Duchenne MD is the most common form of MD and primarily affects boys. It is caused by the absence of dystrophin, a protein involved in maintaining the integrity of muscle. Onset is between 3 and 5 years and the disorder progresses rapidly. Facioscapulohumeral MD usually begins in the teenage years. It causes progressive weakness in muscles of the face, arms, legs, and around the shoulders and chest. It progresses slowly and can vary in symptoms from mild to disabling. Myotonic MD is the disorder's most common adult form and is typified by prolonged muscle spasms, cataracts, cardiac abnormalities, and endocrine disturbances. Individuals with myotonic MD have long, thin faces, drooping eyelids, and a swan-like neck.”…show more content…
This means that the child has to receive two recessive genes, one from each parent. “Children are born with sickle cell hemoglobin, which they inherit from their parents. Individuals may be carriers who have sickle cell trait or may actually have sickle cell disease. People who inherit only one sickle cell gene are carriers, but people who inherit two sickle cell genes have sickle cell disease” (WebMD). Sickle Cell Anemia is a genetic disease that affects blood cells. “Sickle cell [Anemia] is a genetic (passed from parent to child) disorder that affects the body's blood cells. In this disease, faulty hemoglobin (a substance that carries oxygen in the blood) causes the red blood cells to change shape when oxygen is released to tissues” (WebMD). Some of the symptoms of Sickle Cell Anemia are pain fatigue and swelling and inflammation of joints. People can be diagnosed in people at any age. “Sickle cell disease is diagnosed by examining a sample of blood under a microscope. When the abnormal sickle-shaped cells in the blood are identified, a diagnosis is made. Also, a blood test called the hemoglobin electrophoresis can determine if a person has the disease or is a carrier”

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