Answer:
Monozygotic, Dizygotc.
Explanation:
The completed sentence will be as follows -
Monozygotic twins are the twins who develop from the splitting of a single egg that was fertilized by a single sperm, and dizygotic twins are twins who develop from two different eggs that were fertilized by two different sperm.
* Monozygotic twins are also called identical twins and the dizygotic twins are also called non-identical or fraternal twins.
