Ice breakers can be used to create familiarity within the group and ease everyone into the group process. The desired end result is a more open discussion forum and pleasing environment within the group in which the group process can continue.
1 To form identical or monozygotic twins, one fertilised egg (ovum) splits and develops into two babies with exactly the same genetic information.  To form fraternal or dizygotic twins, two eggs (ova) are fertilised by two sperm and produce two genetically unique children.
So identical twins come from one zygote that splits into two embryos. Fraternal twins, on the other hand, are called dizygotic.. This means they start out from two different zygotes, which means they come from two different eggs, each fertilized by a sperm.