In most adult mammals, neurogenesis primarily occurs in two… Twetch · February 12, 2021 In most adult mammals, neurogenesis primarily occurs in two main regions, the dentate gyrus (DG) of the hippocampus and the olfactory bulb (OB).https://twetch.app/t/6283d71d0c0f708f293695e0fe4d56eef1b556e5ac9a224e17dddee1153319d2