Plymouth Elementary School first grade students celebrate the groundbreaking of the new Legoland Discovery Center at Plymouth Meeting Mall by playing in a pile of more than 50,000 Lego bricks spilled by a dump truck at the Oct. 25 ceremony. | Photo courtesy Legoland Discovery Center.
If this DNA has a mutation, the child that grows from the fertilized egg will have the mutation in each of his or her cells. Acquired (or somatic) mutations occur at some time during a personâs life and are present only in certain cells, not in every cell in the body.
1 This results in changes in the proteins that are made. 2  This can be a bad or a good thing. 3  Mutations can occur during DNA replication if errors are made and not corrected in time. 4  Mutations can also occur as the result of exposure to environmental factors such as smoking, sunlight and radiation.