Today

Today Nov 19, 2009 we had a special guest at the school. His name was Dr.Roberts. He works at the Hudson-Alpha Research group and is the father of a student at our school. He showed us how cancer develops at the cellular level. He said that the problem starts when the DNA becomes slightly diffrent. There are three kinds of mistakes:insertion where the cell adds a strand, deletion where the cell deletes a strand, and finally when the cell changes one of the strands. The abnormal cell then reproduces itself and creates more cancer cells which develop into tumors.