And i know some tribes in africa particularlly in nigeria have special names for twins...In yoruba tribe of the country ,they refer to twins as "Ibeji"with unique names as (taiye and kehinde), which is more like a generic for all twins in yoruba land , but some parents still further as calling them with non-generic names such as Bimbo and Bola, Mary and Mariam, thats twins are both females. But when the twins are male and female, they refer to them as either mayowa and Morayo or Tolu and Tosin, as long as the names rhymes with each other and also nice, it is good for naming any twins , while in the case of triplet they refer to them as"Ibeta" e.t.c. but the igbo's refer to twins as "ejima" so also other tribes in nigeria like the Hausa's and the Efik speaking tribe of nigeria .
I also appreciate the STEEMIT community for this great opportunity to share my thoughts to the world ,because i know birthday's is that special moment in anyone's life , most especially to my lovely and adorable twins,frience and church members in BLW Campus ministry Uniuyo, that's why I 
...FACTS YOU NEED TO KNOW ABOUT TWINS...
THERE ARE SEVEN KNOWN TYPES OF TWINS
*There Are Several Kinds Of Twins, but the two major types are the identical twins and the fraternal twins ,the identical twins scientifically known as the (Monozygotic) formed when one fertillized egg (ovum) splits and develops into two babies, with the same genetic informations. while the fraternal twins(dizygotic) is formed when two seperate eggs(ova) are fertilised by two seperate sperm, to give birth to two seperate babies...
(1)FRATERNAL TWINS.
Twins that are male and female or have different blood types can easily be determined as fraternal. Fraternal twins can share many similarities in appearance just like any brother or sister of the same family.
(2) IDENTICAL TWINS.
Identical twins start out as genetically identical as they have the same genes. They are formed by a fertilized egg dividing into two separate individuals. They are always of the same
(3)MIXED CHROMOSOME TWINS.
This occurs if two separate sperms fertilize two separate eggs which then fuse, producing individuals with different sets of chromosomes. Some have been identified to have more than one distinct red blood cell type and individuals who are both XX and XY (the sex chromosomes – XX being female and XY being male.) It is very rare, and less than 25 cases have been identified as yet.
(4) MIRRO IMAGE TWINS.
These twins often have “mirror images” of their features, such as hair whorls that run clockwise in one and counter clockwise in the other, a birthmark on the right shoulder of one and the left shoulder of the other, etc. There is no specific test for determining if twins are mirror-image. The determination is made by observation only.
(5)HALF-IDENTICAL TWINS.
These are the type of twins who share half their genes in common (from the mother) and the other half different (from the two sperms). They share some features of identical twins and some features of fraternal twins and thus are called half-identical twins.
(6)SUPERFETATION.
Superfetation is the occurrence of another pregnancy during an ongoing pregnancy. It happens when there is fertilization of an ovule by a sperm cell while a conceptus is already present in the
(7)SUPERFECUNDATION.
Twins can have different fathers. One well known case was described in 1810 in the United States. A woman had both a white and a black lover, and she became pregnant and gave birth to twins, one white and the other black. Each twin had a different father. This is called superfecundation.
