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.
(Although they have the same birthday, fraternal twins are genetically no more alike than any other sibling.) The tendency to release more than one egg in a single cycle (hyperovulation) is a genetic trait that can be passed from mother to child.