Question

3. Two parents bring their 4-year-old son, James, to the doctor because he is having

difficulty walking. He is diagnosed with a genetic disorder called Duchenne muscular
dystrophy, which affects males much more often than females. When genetic testing of
the family is done it is found that James' grandmother, mother, and one of his sisters are
all carriers for the disease. What is the most likely inheritance pattern for this disease?
i

Answer 1

from his mother

Step-by-step explanation:

because they have one copy of X chromosome from their mother and if X chromosome have DMD gene mutation so he will have DMD