What type of genetic disorder is the duchenne muscular dystrophy?

"X-Linked recessive" This means that the problem causing this disease is carried on the x chromosome. Women have 2 of these, men just one. If a boy has an x chromosome that has this genetic defect, there is no other dna to "cover" this up and that boy will have the disease. Women have 2 copies of dna, and only can be carriers. Mothers can then pass this problem on to their sons, however.

Related Questions

How come duchenne muscular dystrophy considered a genetic disorder?

Mutated gene in X . Duchenne muscular dystrophy is caused by an abnormal gene in x chromosome, and is inherited as an x-linked recessive trait. Read more...
Its chromosomal. The gene for the abnormal protein is located on the x chromosome. Hence it is "x linked" . Mostly boys are affected. Read more...

What is the genetic inheritance of duchenne muscular dystrophy?

X-linked inheritance. Duchenne muscular dystrophy is caused by a mutation of the dmd gene on the x chromosome. A woman who is a carrier will pass the mutation (on average) to half of her sons and half of her daughters, but only the sons will develop muscular dystrophy - because they have only one x chromosome. Carrier females with one normal dmd gene are usually free of symptoms. Your genetic counselor can explain more. Read more...
X linked. The gene for the abnormal protein is located on the x chromosome. Hence it is "x linked" . Mostly boys are affected. Read more...

What mutation type causes duchenne muscular dystrophy?

Duchenne MD. Duchenne muscular dystrophy is caused by a defective gene for dystrophin (a protein in the muscles). It is inherited in an X-linked recessive fashion, but it often occurs in people from families without a known family history of the condition. Children with the condition should be followed with a multi-specialist team approach. Read more...
DMD is caused by. mutation of Xp21.2-p21.1, a large gene that encodes dystrophin, a muscle protein. Deletions in specific areas of the gene are associated with cognitive impairment, verbal memory, auditory comprehension, increased risk of ADHD & Autistic Spectrum Disorder. Each son of a carrier mom has a 50% chance of having DMD. Carrier females need testing for cardiomyopathy, heart muscle disease. . See mda.org. Read more...

Where does duchenne muscular dystrophy usually appear?

Proximal muscles. Like most muscle diseases the proximal muscles are affected first duchenne is a sex linked congenital muscle disorder affecting boys and usually is symptomatic by the age of two. Read more...
Before age 3 years. Boys with Duchennes MD experience weakness in their lower extremities, especially the hip and erector muscles of the thighs, with frequent falling. The appear to have hypertrophy of the calf muscles. Read more...

Where can I find good info on duchenne muscular dystrophy?

MDA and NIH. Muscular dystrophy association www.mda.com. And national institutes of health website. http://www.ninds.nih.gov/disorders/md/md.htm. Read more...