Examine the following chips analyzing SNP $($single nucleotide polymorphisms$)$ of DNA in both healthy and tumor cells. A white cell shows lack of signal, a yellow shows one chromosome worth of signal and a red indicates two or more copies worth of signal.

What type of mutation has occurred $($how is the tumor cell chromosome different from the healthy cell$$s chromosome$)?$ Is this likely to affect a tumor suppressor gene or an oncogene$/$protooncogene$?$ Explain your reasoning.