Cleavage is a $\underline{A}$ which starts just after fertilization as the zygote moves through $\underline{B}$ of the oviduct towards the uterus.

• A
  $A = \text{Mitosis}, B = \text{Isthmus}$
• B
  $A = \text{Meiosis}, B = \text{Isthmus}$
• C
  $A = \text{Mitosis}, B = \text{Ampulla}$
• D
  $A = \text{Amitosis}, B = \text{Ampulla}$