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Question: Myoclonic epilepsy and ragged-red fiber (MERRF) rare disorder that
affects neuromuscular systems….



Myoclonic epilepsy and ragged-red fiber (MERRF) rare disorder that
affects neuromuscular systems. MERRF results from a mutation in
mitochondrial DNA (mtDNA) That impairs protein synthesis, oxygen
consumption, and energy production. When an affected male and a
normal female reproduce, which of the following best predicts the
expected phenotypic ratios of the offspring?

All males and no females will be affected
None of the offspring will be affected
Half of males and half of females will be affected
One-fourth of the offspring will be affected

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