A 6-month-old male infant is referred to audiology following failed newborn hearing screening with absent otoacoustic emissions (OAE) bilaterally. Audiometric testing reveals the pattern marked D in the diagram — bilateral symmetric mid-frequency sensorineural hearing loss with preserved low and high frequencies. The child's parents are unrelated and both have normal hearing. Which of the following genetic mutations is the MOST LIKELY cause of this audiogram pattern, and what is the inheritance pattern?

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