Question

Pseudohypertrophic muscular dystrophy is a human disorder that causes gradual deterioration of the muscles. Only boys are affected. true or false

Answer 1

True

Step-by-step explanation:

The sentence is true because dystrophy is an X-linked genetic disease. This happens because recessive X-linked diseases appear more in males than in females due to if a male receives a "bad" allele from his mother, he has no chance of receiving a "good" allele from his father (which gives him a Y chromosome) to hide the "bad" allele. Females, on the other hand, will usually receive a normal allele from their parents, preventing the disease-causing allele from expressing itself. So, to a girl be affected by this kind of disease, she gotta be a child of two people who suffer from DMD, which is very rare. In most cases of DMD, the mutation is passed from the mother who doesn't know she is a carrier because there are no symptoms.

Answer 2

True

Step-by-step explanation:

Pseudohypertrophic muscular dystrophy is a human disorder that causes gradual deterioration of the muscles. Only BOYS are affected.

It is observed that these boys are born to phenotypically normal parents.

Due to the high risk and health care nature of the disease, the boys tend to die at an early age, during their teens age.

The disorder is caused by a recessive allele and it is sex-linked since it is only in boys and not in females.

Muscular dystrophy (MD) is a genetic disorder that weakens the body's muscles. It occurs when there is an incorrect or missing genetic information which inhibits the body from producing the necessary proteins for developing and maintaining of healthy muscles.