presymptomatic Testing For Huntington Disease Huntington Disease, (HD), is a hereditary degenarative mavin disease. Usually begining in mid-life, cells in the caudate nucleus of the oral sex begin to die, causing a relentless deterioration of knowing ability, emotional control, motor skills, balance and speech. Chorea, or involuntary movements, is virtually always a symptom as well. HD is caused by a single overabundant ingredient. Every child of an affected prove has a 50% chance of inheriting the gene that causes HD. The HD gene is found on chromosome 4. It is inherited as an autosomal dominant condition.
Since it is not carried on one of the sex chromosomes, male and female offspring have the same chance of being affected. Presymptomatic testing is a method for identifying persons carrying the HD gene before symptoms appear. This ignore be useful for couples who have a history of HD in their families and wish to know if they have the HD gene before decision making upon having children. ...If you want to get a full essay, order it on our website:
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