2 doctors weighed in:
How is muscular dystrophy passed down to a child from his parents?
2 doctors weighed in

Dr. James Ferguson
Pediatrics
1 doctor agrees
In brief: X linked or new mutn
The md's can arise as a new mutation in a child or an asymptomatic carrier mother on one of her x chromosomes.
As a recessive gene, it will not express when balanced by a normal gene, but can express in male offspring since a carrier x is paired with a y. If mom is a carrier, there is 50% risk with any male pregnancy to have an affected male.

In brief: X linked or new mutn
The md's can arise as a new mutation in a child or an asymptomatic carrier mother on one of her x chromosomes.
As a recessive gene, it will not express when balanced by a normal gene, but can express in male offspring since a carrier x is paired with a y. If mom is a carrier, there is 50% risk with any male pregnancy to have an affected male.
Dr. James Ferguson
Dr. James Ferguson
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