What's the mechanism?
Still they showed pretty crazy results like being able to create a worm with heads on both ends.
It's looks like this kind of electrical signaling is likely the primary mechanism by which your cells know what to become and in which direction to grow.
A super interesting paper that I'm surprised isn't more famous: https://www.sciencedaily.com/releases/2017/05/170523124219.h...
Plenty of animals have a sense for the earth's magnetism and this is well documented:
https://en.wikipedia.org/wiki/Magnetoreception
Putting cables carrying strong electric currents which in turn generate magnetic fields around those cables would be almost sure to have some effect, the question then becomes how much of an effect rather than whether or not such an effect is possible.