A 20-Year-Old Male Seeking Help from His Ophthalmologist Presents with Deteriorating

A 20-year-old male seeking help from his ophthalmologist presents with deteriorating vision in both eyes, especially his central vision. The patient also evidences cardiac dysrythmia and an apparent demyelination of the optic nerve. The ophthalmologist suspects Leber's hereditary optic neuropathy, a condition caused by a point mutation that is not X-linked but is transmitted only by females. This condition is due to problems with which of the following?

A) lysosomes
B) early endosomes
C) late endosomes
D) mitochondria
E) peroxisomes

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