“Twins share on average about half of their genes.” (Peeking at Twins) Giving birth to identical twins is called monozygotic. Being monozygotic mean that the infants share a placenta and an amniotic sac. “If the babies are identical this can be even more problematic, as it raises issues such as how to cope with two individuals that appear to be one.” (Ball and Hill) If the children are identical, then they can switch places. This would mean that one twin would fill in for the other is they wanted to play a joke on someone or if they other was sick and needed to be somewhere. Although this may not happen often, having an identical twin has its upsides just as having any twin woul as they would probably be each other’s best