Light is essential for most life on Earth, and single-celled or small multicellular organisms were most likely first to develop the ability to respond to light. But now, researchers from Japan have identified interesting behavior in sea urchin larvae that may provide insights into the evolution of light-responsive tissues/organelles in macroscopic animals.
Click here for original story, Illuminating research sheds new light on the evolution of light-response systems
Source: Phys.org