Jane has a son who has Duchenne muscular dystrophy, which is…
Jane has a son who has Duchenne muscular dystrophy, which is inherited as an X-linked recessive trait. At a molecular level, the disease is due to lack of the protein dystrophin. Jane participates in a study to look at dystrophin levels in various muscles, so she has cells sampled from 10 different muscles. Some cells make dystrophin, and some do not. An explanation for this finding is that