Causes & Inheritance

Causes & Inheritance

Causes & Inheritance

Causes & Inheritance

Causes & Inheritance

Causes & Inheritance

The faulty gene is X-linked, meaning that it is situated on the X chromosome. In most cases females who have the faulty dystrophin gene will show no symptoms, besides slight fatigue, because they have a 'back-up' X chromosome.

DMD occurs because the mutated gene fails to produce virtually any functional dystrophin. (Individuals with Becker MD genetic mutations make dystrophin that is partially functional, which protects their muscles from degenerating as badly or as quickly as in DMD.)

(It is recessive)