What can be done to modify a nerve cell to function most efficiently

Explanation:

Axons, the long, cable-like projections on neurons, are made stronger by a unique modification of the common molecular building block of the cell skeleton. ... They also support transport of molecules within the cell and facilitate growth. They are made up of polymers of a building-block substance called tubulin.

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.