Twins born in Queensland, Australia have been found to belong to an extremely rare in-between type known as “semi-identical” twins. This is only the second known case in the world, and the first time it was identified during pregnancy using genetic testing.

Looking for twin names that fit like to peas in a pod? Check out these sets of twin names for all types of twins.

For twins, zygosity refers to the degree of genetic similarity within each pair. There are two different types of twins: Dizygotic and Monozygotic. There are several ways zygosity can be determined.

Pregnancy

There are two types of twins, Identical and Fraternal that are the most commonly recognized. However, seven others are less common, such as Half-Identical, Mirror Image, Mixed Chromosome, Superfecundation, Superfetation, Conjoined, and Parasitic.

#Twins info from www.twinsgiftcompany.co.uk

Knowing whether you’re having fraternal twins or identical twins can be important for your antenatal care and also for your children’s health later in life.

5 types of twin moms. Which one are you?