Donna Scrivo was arraigned Monday in St. Clair Shores District Court.
She was charged earlier this month with mutilating and illegally removing a corpse after Ramsay Scrivo's body parts were found northeast of Detroit in St. Clair County.
Autopsy results show the 32-year-old died from asphyxiation.
Prosecutors say Donna Scrivo filed a missing person's report Jan. 27 in which she claimed her son left his St. Clair Shores home and failed to return. Three days later, someone reported seeing a woman dumping trash bags from an SUV in China and St. Clair townships.