Several Experiments Suggest That the Binding of Carbon Dioxide to Its

question 17

Essay

Several experiments suggest that the binding of carbon dioxide to its specific receptor, Gr21a, in a particular subset of ORNs is sufficient to mediate avoidance behavior in flies, much like activation of the AWB neurons in C. elegans. Briefly describe a novel experiment to confirm that activation of Gr21a-expressing neurons is sufficient for odorant avoidance in flies.

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Definitions:

Iliac Crest

The top border of the ilium, a part of the hip bone, often used as a site for bone marrow and bone grafts.

Gluteus Medius

Muscle located at the back of the iliac crest and stretches downward toward the greater trochanter of the femur.

Greater Trochanter

A prominent bony projection on the proximal (near) part of the femur, serving as a major site for muscle attachment.

Dystrophy

Progressive atrophy or weakening of a part, such as the muscles.