How come some women have twins?
There are two types of twins, those who look the same
and those who do not look the same. About 25% of all
twins are twins who look the same. This means that they
grew out of one egg. which split into two different
clusters of cells, both of which later developed into a
baby. Until now the scientists do not fully understand,
why some eggs split up. As they are created from the
same egg, twins of this type are always the same sex
and they look very similar.
Twins who do not look like one another are caused by a
simultaneous release of an egg in each ovary ofthe
woman. Both eggs are fertilised, each one by a separate
sperm from the man and two babies start to grow at the
same time in the uterus. Except for growing in the same
womb and being the same age, these twins are like any
other children of these same parents. They can be of a
different sex and have completely different
characteristics to each other
