Before revision: URL Degree of separation Various types of chorionicity and amniosity (how the baby's sac looks) in monozygotic (one egg/identical) twins as a result of when the fertilized egg divides The degree of separation of the twins in utero depends on if and when they split into two zygotes.
After revision: Degree of separation Various types of chorionicity and amniosity (how the baby's sac looks) in monozygotic (one egg/identical) twins as a result of when the fertilized egg divides The degree of separation of the twins in utero depends on if and when they split into two zygotes.