Derived from a single fertilized ovum or embryonic cell mass.
Means single. In monozygotic twins one fertilized egg seperates into two identical zygotes.
derived from a single fertilized egg; "monozygotic twins"
Identical twins, born after a single early embryo splits into two, producing genetically identical fetuses.
formed from a single fertilised egg.
identical; one egg is fertilized by one sperm and then splits