The document summarizes the process of human fertilization in 6 stages: 1) Capacitation of sperm in the female reproductive tract. 2) The acrosome reaction allows sperm to penetrate the corona radiata. 3) A single sperm fuses with the oocyte plasma membrane. 4) The second meiotic division of the oocyte is completed, forming the female pronucleus. 5) The male and female pronuclei fuse, forming a single cell with a full chromosome complement. 6) The zygote undergoes its first cell division, forming a two-cell embryo.