Gametogenesis and Meiosis Is meiosis and gametogenesis same? Let us see. Meiosis is a cell division process wherein reduction division occurs causing chromosome number to be reduced to half the number. Gametogenesis is the process of production of gametes through the division of diploid cells for the production of new haploid cells. It is the process in which the diploid cells change into mature gametes. In gametogenesis, both mitotic and meiotic divisions takes place.