why is it that so many animals have their brains in their head, rather than anywhere else in their body?
In: Biology
Eyes probably evolved before the brain – after all you don’t need much brain power if you can’t see. The brain then evolved alongside eyes to process all that visual information.
The retina is effectively an extension of the brain, they both develop from the same tissue. It would be quite an evolutionary step for the brain to move elsewhere.
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