Flatworms Grow Heads and Brains of Other Species

It's clear that genes aren't everything. Even in humans, environmental factors can change the way the same genes are expressed. In flatworms, it seems, these non-genomic changes can even be manipulated to change brain and body shape -- at least temporarily. Researchers hope that studying these non-genomic tweaks can help them learn how to fix birth defects, or even how to make lost body tissues regenerate.

Read the full story at The Washington Post