Duchenne muscular dystrophy (md) is inherited from an x-linked recessive allele. what is the probability that a son with duchenne md inherited this disease from his biological father?

The Duchene muscular dystrophy or DMD is caused by the mutations in the Dystrophin gene. In this condition, a point mutation occur which lead to the loss of the muscle mass gradually, due an X linked disease; it is more common in males.

Every male accept an X-chromosome from the mother and a Y chromosome from his father. In case, the son has the DMD it must be inherited from mother, not the father.

a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.