The Coordinated Pattern of Migration of Neural Crest Cells from Rhombomere

question 11

Multiple Choice

The coordinated pattern of migration of neural crest cells from rhombomere 2 to the first pharyngeal arch,rhombomere 4 into the second arch,and rhombomere 6 into the third arch is correlated with precise expression patterns of which of the Hox gene families?

• A)Hox-1 (Hox A)
• B)Hox-2 (Hox B)
• C)Hox-3 (Hox C)
• D)Hox-4 (Hox D)

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Definitions:

Otolith

Small calcified structures found in the inner ear of vertebrates, crucial for balance and hearing by detecting motion and orientation.

Middle Ear

A part of the ear that contains three small bones known as the ossicles, responsible for transmitting sound from the outer ear to the inner ear.

Auditory Nerve

A cranial nerve that transmits sound information from the cochlea of the inner ear to the brain.

Olfactory Tract

A pathway of neural fibers that transmit smell information from the nose to the brain.