1 Why is your brain symmetrical (meaning that the left and right sides look alike)? You have a left and right motor cortex, a left and right hippocampus, a left and right cerebellum, and so on. In each case, the left side is a mirror image of the right side (just as, for example, your left eye is a mirror image of your right eye). Can you think of any reason why your brain is symmetrical in this way?

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