From the beginning of the genetic. [Part 1]
Why is twin baby? (Fraternal Twin)
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(Fraternal Twin)
Being a male child or a female child is totally dependent on the man, but being twinned child depends on women. If there is a twin earlier in the family or close-up of a woman, there is a possibility of 50% or more of the genetic factors that will give birth to those women and twins. Such twin is Fraternal Twin. They are born in two different egg fertilization. Two ovules in the mother's womb suddenly after the separation of two separate sperm, the two babies can be born at the same time. Even though they are twins, they are not the same, their blood group may not be different or they may not be. In this case, two children may be either boys or two girls or a girl or another. Genetic causes of this type of twin.