Scientists have recently completed the most ambitious effort yet to construct such a map: a complete document of every neuron and every connection in the brain of an adult fruit fly.

This discovery provides a unique example of sexual dimorphism in the structure of a single neuron, which is linked to behavioral differences. 'Male' vs. 'female' brains.

It is true that this olfactory structure doesn’t exist in our brains. However, ... To the extent that there’s such a thing as a “typical” neuron, ...