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What is the genetic cause associated with ALS disease? - als more condition_symptoms

What are the causes linked genetic disease with ALS?
A. Gen, which for most of the secretion of a neurotransmitter called acetylcholine.
B. An error in the DNA, which prevents the muscle cells take calcium.
C. A mutation that causes a defective protein to be taken is in line with mitochondria.
D. A bug that prevented the removal of the muscle fiber in order to be successful.