MD weakens muscles over time, so children, teens, and adults who have the disease can gradually lose the ability to do the things most people take for granted, like walking or sitting up. Someone with MD might start having muscle problems as a baby or their symptoms might start later. Some people even develop MD as adults.
Several major forms of muscular dystrophy can affect teens, each of which weakens different muscle groups in various ways:
The life expectancy (in other words, how long a person may live) for many of these forms of muscular dystrophy depends on the degree to which a person's muscles are weakened as well as how much the heart and lungs are affected
dystrophin
recessive
No, it's caused by a single point mutation of a gene.
sickle-cell anemia.
It is caused by a gene mutation in the single gene on chromosome 7 that produces a protein known as CFTR.
A gene mutation can be caused by radiation. A gene mutation can also be inherited from family members, such as grandparents and parents.
There are many thousands of different mutations.
The gene is on the short (p) arm of the X chromosome. The gene is known as the dystrophin gene, or simply DMD. It is the longest gene known in the human genome, and codes for the protein dystrophin. According to Aminoff, 2005; the point mutation causing Duchenne Muscular Dystrophy is exhibited on the Xp21 gene, belonging to the above stated chromosome.
No, it is a dominant gene
A frameshift mutation in the CARD15 gene
Most commonly is caused by a mutation in one of three types of collagen genes - COL2A1, COL11A1, COL11A2 and is a dominantly inherited disease. A recessive type has also beed described with a mutation in the COL9A1 gene.
Most cases of Alexander disease are genetic, caused by a dominant mutation (change) in the glial fibrillary acidic protein (GFAP) gene on chromosome 17.