Sonic Hedgehog and other signaling proteins are needed to form the right and left halves (hemispheres) of the brain. Specifically, Sonic Hedgehog establishes the midline for the underside (ventral surface) of the forebrain. This signaling protein helps establish the line that separates the right and left sides of the forebrain (the midline). Sonic Hedgehog is necessary for the development of the front part of the brain (forebrain). This protein is important for development of the brain and spinal cord (central nervous system), eyes, limbs, and many other parts of the body. Sonic Hedgehog plays a role in cell growth, cell specialization, and the normal shaping (patterning) of the body. This protein functions as a chemical signal that is essential for embryonic development. He looked at himself and gasps when he sees he's wearing her dress.The SHH gene provides instructions for making a protein called Sonic Hedgehog. 'What the?! A clone?!' *Sonic jumps up in fright. 'Oww.what just happened?' *Sonic groaned and sits up, opening his eyes to see his own body standing in front of him. 'Oh my God!' *Amy whimpered and saw Sonic in her body waking up. 'AAAAAAAAAAAHHHH!!!!! What the?!' Amy screamed out loud, she realizes that she is in Sonic's body. I feel funny' Amy groaned and got up, but what shocked her was that she saw her own body.

Later, Amy opened her eyes and she moaned tiredly. 'Ugh!' Sonic grunts from the impact and hit his head against the tree. The aura souls emerged from their bodies and went to the opposite directions to a different body. 'What in the world?!' Sonic's item glowed too.ДЄs the crystals glowed at the same time, the glowing aura on the two hedgehogs appeared, screaming and panicking from whatever its about to happen. Suddenly in her eyes they glowed, 'What the?!' 'Seems like someone forgot these' Sonic held one of them to Amy. Sonic knees down and sees two crystals resembling a male and female symbol. But on the way, they stepped on something. 'Ok, let's find it' Amy mutters and walks the way the chaos emerald is. Sonic sighs and follows her, after walking a bit in the forest, Sonic then checks his chaos emerald seeker from his wrist, 'Amy, the emerald must be close by' 'Neither does your dark form scare me! Now quit goofing off and let's try to work together, all right?! And the next time you insult me again, I'll bash that skull so hard you'll just be called Fastest Boo-boo Alive!' Amy snarled and walks in the jungle, feeling very pissed off. 'Huh, is that so? You and your cute look don't scare me!' Sonic yelled back. 'Hey! It's not an ugly hammer! So knock it off! My hammer is a lot stronger to break anything than your spin dash!' Amy yelled in his face. 'Well you should train than using your ugly hammer!' he threatened her. Just because I get caught by Eggman does not mean I'm stupid' Amy said. 'I rather be eating chilidogs' Sonic answered sarcastically. 'Sonikku, are you sure we won't be late for our date later?' Amy asked him happily. He would rather go with his best pal Tails than with the pink hedgehog. As for Sonic, he was not happy with this because his partner is Amy and he really did not want to go with her. And that they have to split up and pair with a partner to work together as a team.

Sonic and the gang are in the jungle of Mystic Ruins, searching for the missing Chaos Emeralds. When it comes to writing stories of two characters swapped bodies, always use the star symbol on the person's name so that we don't get confused to who is who in a different body.

Sonic body swap