Sonic the Hedgehog (character) Sonic the Hedgehog (character) Sonic the Hedgehog is the title character and protagonist of the "Sonic the Hedgehog" video game series released by Sega, as well as numerous spin-off comics, animations, and other media. Sonic is a blue anthropomorphic hedgehog who can run at supersonic speeds and curl into a ball, primarily to attack enemies. Throughout the course of the video games, Sonic most commonly has to race through levels, collect power up rings and survive against a host of natural obstacles and minions to achieve his goal. While many individuals at Sega had a hand in Sonic's creation, programmer
Sonic hedgehog including the limb and midline structures in the brain, spinal cord, the thalamus by the "zona limitans intrathalamica" the lungs, and the teeth. Mutations in the human sonic hedgehog gene, "SHH", cause holoprosencephaly type 3 HPE3 as a result of the loss of the ventral midline. Sonic hedgehog is secreted at the zone of polarizing activity, which is located on the posterior side of a limb bud in an embryo. The sonic hedgehog transcription pathway has also been linked to the formation of specific kinds of cancerous tumors, including the embryonic cerebellar tumor, and medulloblastoma, as well as the progression