sapphirenightcutter
contestada

Duchene muscular dystrophy, or DMD, is a recessive, x-linked disease. What would you expect to see in the offspring of a woman who has DMD and a man who does not have the disease?

All of their sons and none of their daughters would have the disease.

None of their children would have the disease, but they would all be carriers.

All of their daughters and none of their sons would have the disease.

Their daughters would have the disease and their sons would be carriers.

Respuesta :

Answer:

Option B

Explanation:

Given -

Duchene muscular dystrophy is a recessive x-linked disease

A cross is carried out between a woman having DMD and a man who does not have a disease.  

Let X' represents the affected allele.  

The genotype of female would be X'X'

and the genotype of male would be YX

The offspring produced would be as follows -  

YX * X'X'

YX', YX', XX', XX'

This means that all the offspring are carrier and none of them is affected.

Hence, option B is correct

In the given case all of their sons and none of their daughters would have the disease. The correct option is A.

What is Duchenne muscular dystrophy?

Duchenne muscular dystrophy (DMD) is a genetic disorder exemplified by gradual muscle degeneration and weakness caused by changes in a protein called dystrophin, which aids in the maintenance of muscle cells. DMD is one of four types of dystrophinopathies.

As in the given case, it is X-linked disease, so will have have it on both X chromosomes in mother.

As the daughter will have one X chromosome from mother and one from father, she will be carrier of the disease.

As in case of son, X-chromosome comes from mother that is infected, so they will definitely have the disease.

Thus, the correct option is A.

For more details regarding Duchenne muscular dystrophy, visit:

https://brainly.com/question/13252113

#SPJ2

Otras preguntas