 Unlike expert witnesses, appellate courts often prefer that only one reference class be considered. In another case, Michael Pizarro, who matched the crime traces, was convicted of raping and suffocating his 13-year-old-half-sister (People v. Pizarro, 110 Cal.App.4th 530, 2003). The FBI analyst testified at trial that the likelihood of finding another unrelated Hispanic individual with the same genetic profile was approximately \(\slashfrac{1}{250,000}\). Since the race of the perpetrator was not known, Pizarro appealed arguing that the DNA evidence was inadmissible. The appellate court sided with Pizarro and objected to the presentation of frequency estimates for the Hispanic population as well as frequencies for any other racial or ethnic groups. The court wrote: 