Examlex
The details of how Hox genes control cell fate are not understood. Two competing theories have arisen about this, the combinatorial Hox code model and the posterior prevalence model. Describe each of these theories and propose an experiment that would allow you to determine which is the better model.
Gag Reflex
A reflex contraction of the back of the throat evoked by touching the soft palate, preventing choking.
Lumbar Puncture
A procedure to collect cerebrospinal fluid from the spinal canal for diagnostic purposes or to inject medication, performed in the lumbar region.
Subarachnoid Space
The area between the arachnoid membrane and pia mater around the brain and spinal cord, containing cerebrospinal fluid.
Cerebrospinal Fluid
The clear, colorless body fluid found in the brain and spinal cord, providing cushioning and maintaining a stable environment.
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