TWINS

There are two kind of twins:
“Identical twins”
And the “fraternal twins”
The twins are persons that are born in the same day from the same parents and during the same delivery.
Is not very common to have twins.
The “identical twins “are not identical twins because they same some differences.  For example, the fingerprints are different.
In the first day one fertilized ova divides in two identical parts.
Then between the 8th and the 12th day they share the same placenta and they can be or two boys or two girls.
“Fraternal Twins”
The twins are form by two different sperms and different ova.
Every fraternal twin has his own placenta.
Usually fraternal twins are a boy and a girl.

HAPPY NEW YEAR.