Mr. Johnson was becoming slightly deaf. To test his hearing, his doctor held a vibrating tuning fork tightly against Mr. Johnson's jaw. This sent vibrations through the bones of the skull, setting the fluid in the cochlea in motion. Mr. Johnson could hear the tuning fork this way, but not when it was held away from the skull a few inches from his ear. Where was the hearing problem most likely to
be?
A. auditory cortex of Mr. Johnson's brain
B. auditory nerve leading to Mr. Johnson's brain
C. hair cells in the cochlea
D. tympanum or the bones of the middle ear
E. fluid of the cochlea
D. tympanum or the bones of the middle ear
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Genome-wide association studies are identifying many genes that may affect disease risk. Describe how GWAS is used to determine if a mutation or gene may be a risk factor for disease
What will be an ideal response?