Duchenne muscular dystrophy (DMD) is a progressive muscular disorder caused by an X- linked, recessive gene. A woman, who is a carrier for DMD, mates with a man who has DMD. Answer the following questions. Show your work with a Punnett square.
1) What percentage of their children (either sex) will have DMD?
2) What percentage of male children will have DMD?
3) What percentage of female children will have DMD?