Please answer all questions with the best of knowledge.
How can a seemingly valuable behavior evolve in one species but not in another? For example, primates can vomit but rodents cannot. Mention genes and natural selection in your answer.
Many people believe that we use only ten percent of our brains. Use evidence about the brain to evaluate such a claim.
How are neurotransmitters, membrane receptors and ion channels related?
What are three differences between rod and cone photoreceptors?
How would you describe the difference between what the retina does and what the striate cortex does?
Explain how hair cells transduce sound into elecrical potentials.

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