One of Two Major Forms of Neurofibromatosis Results from Inheriting

question 33

Multiple Choice

One of two major forms of neurofibromatosis results from inheriting a dominant allele of a gene with affected individuals having phenotypes that range from mild to very severe. Which of the following is the best explanation for why a young child is the first in her family to be diagnosed with a severe form of the condition?

• A) The mother carries the gene but does not express it.
• B) One of the parents has a mild expression of the gene.
• C) The condition skipped a generation in the family.
• D) The child has one more chromosome than either of the parents.

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Definitions:

Ball Joint Wear

The deterioration of a ball joint, a pivot point used in the steering and suspension system of a vehicle, which can lead to steering issues and uneven tire wear.

Rotational Torque

The twisting force that causes an object to rotate around an axis, pivotal in understanding the performance and efficiency of engines and mechanical systems.

Spring Bumper

A component designed to absorb and reduce shock, positioned between the suspension and the frame of a vehicle to enhance ride comfort.

Spring

A mechanical component that can be compressed or stretched, used to absorb shock, or produce a force.