Question

A 13-year-old boy is diagnosed with neurofibromatosis after an MRI reveals bilateral acoustic neuromas as the cause of his progressive decline in hearing.

By which of the following modes is this disease manifested?
A. Autosomal dominant
B. Autosomal recessive
C. Mitochondrial inheritance
D. Somatic mutation
E. X-linked recessive

Answer 1

Neurofibromatosis is manifested through an autosomal dominant inheritance pattern. In this case, the 13-year-old boy's decline in hearing was caused by bilateral acoustic neuromas.

Step-by-step explanation:

Neurofibromatosis is an inherited disorder that is manifested through an autosomal dominant inheritance pattern. This means that if one parent carries the dominant allele for neurofibromatosis (Nn) and the other parent is homozygous for the normal gene (nn), their offspring have a 50 percent chance of inheriting the disorder. In this case, the 13-year-old boy was diagnosed with neurofibromatosis after an MRI revealed bilateral acoustic neuromas, which are the cause of his progressive decline in hearing.