Though not especially informative about the sonic hedgehog gene, this article gives some interesting and amusing insights into the process of naming genes.
Sonic hedgehog makes a protein that sculpts human embryos’ nervous system, limbs and organs. Later in life, it can activate hair growth and contribute to several types of cancer. It’s hugely interesting to stem cell scientists and oncologists.
But the Norwegian scientist who discovered sonic hedgehog 12 years ago now regrets that it’s named after a SEGA video game. He allowed his American collaborators to talk him into adding sonic to the name. The hedgehog part had been decided years before by the irreverent fruit fly scientists.