A girl and a boy can be identical twins

A boy and a girl could never be identical. Identical twins are developed from one Zygote. While one the other hand, fraternal twins are developed in two separate eggs that are fertilized by two different sperms. Thus, fraternal twins could either be two boys or two girls. Image: Getty
Twin have their own secret language

This is sheer myth; twins do not have any secret language. This term can be called as Cryptophasia, where two people talk in a secret language but nothing like this happens with kids. Like other normal toddlers, twins wail and yelp and we take it as their secret language. Image: Getty
Do they born separately

Yes, twins born separately, at an interval of several minutes or hours. Image: Getty
Do they possess similar finger prints?

People believe that twins have same finger prints but like other myths, this statement has no truth in it. Anatomically, people are different from each other. Though, twin kids look alike but surely their anatomical creation formation will be different from each other. Image: Getty
Twins' character traits

The notion is fairly true that twins either have opposing character or complementary traits. Twins do have personality traits based on each other’s traits. Image: Getty