Mutations may occur in a normal cell as a result of cell division and the effects of environmental and lifestyle factors, such as smoking o r sunlight. Once the first cancer-causing, or driver, mutations occur, defects in cellular processes âfor example, in DNA repairâmay cause more mutations to occur.
U.S. men's national soccer team coach Jurgen Klinsmann out. U.S. men's national team coach Jurgen Klinsmann has been under increased pressure.
The Art of Coaching Softball. Clinician: Ken Erickson, head coach of the USA National Team. Purpose: To develop base running strategy when a runner is on third base. How it works: When a runner reaches third base, serious strategy usually comes into play.