Gyrase (a form of topoisomerase) relaxes and undoes the supercoiling caused by helicase. It does this by cutting the DNA strands, allowing it to rotate and release the supercoil, and then rejoining the strands. Gyrase is most commonly found upstream of the replication fork, where the supercoils form.
TLCâs âI Am Jazzâ to premiere on July 15 The U.S. cable network has set a July 15 air date for I Am Jazz (pictured), a reality show starring transgender teen activist and YouTube personality Jazz Jennings and her family. Radarscreen Events
Jazz is an American style of music that reflects Americans' roots in Africa and Europe. The style originated in New Orleans during the early years of the 20th century. It combines African-American music, ragtime, and the blues. Jazz is typified by complex collective musical improvisation, syncopation, use of blue notes, and call and response.