Mia and Kevin’s first child (Ethan) developed problems shortly after birth and was eventually diagnosed with Duchenne muscular dystrophy (DMD). Ethan is now four years old and doing well on a carefully-planned therapy program although DMD cannot currently be cured. Both Mia and Kevin are healthy. Mia just gave birth to a little girl named Daisy. What is the probability that Daisy will be diagnosed with Duchenne muscular dystrophy? Explain. Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human X chromosome. Patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein.