Stages of implantation

1. Ovulation- A mature follicle bursts and releases an egg into the oviduct 2. Fertilization- A sperm haploid nucleus fuses with an egg haploid nucleus forming a diploid zygote. 3.Zygote divides 4. A ball of cells is formed. 5. The cells in the ball keep dividing as it moves down the oviduct. It is now called an embryo. 6. Implantation- The embryo sinks into the soft lining of the uterus and placenta forms