After fertilization, the process that occurs to form an eight-cell embryo to a morula is 1) mitosis of haploid cells 2) meiosis of haploid cells 3) meiosis of diploid cells 4) mitosis of diploid cells 1) mitosis of haploid cells 2) meiosis of haploid cells 3) meiosis of diploid cells 4) mitosis of diploid cells.