How do twins differ from twins?

A real miracle, when two or even three babies grow and develop in my mother's tummy. For some, this is a cherished dream, for others - a pleasant surprise. But one way or another, after learning about double replenishment, happy parents are impatient to know who their children will be: twins or twins? After all, the difference, though not fundamental, but still there.

Biological features of twins and twins

Children, similar to each other and born with an interval of a couple of minutes, the people are usually called twins. And babies born almost simultaneously (and sometimes with a break of several days), but absolutely not similar in appearance - are called twins. What is the difference between twins from twins in terms of medicine, let's find out.

So, twins - the phenomenon is not so rare in our days. When, for some indefinite reasons, two eggs are ripened in the female body, both are fertilized with different spermatozoa - resulting in fraternal twins (twins). Such karapuzy have a different genetic set, so they differ from each other, like ordinary brothers and sisters. In addition, twins can be of different sexes.

Odnoyaytsevye twins are babies, born as a result of the division of one fertilized egg. In this case, the children receive the same set of chromosomes, respectively, and sex. Crumbs are very similar to each other: they have the same eye color and hue, body, blood type.

An intermediate variant of the development of multiple pregnancy is semi-identical twins, when one or two spermatozoa are fertilized by the egg and its polar body.

How do twins differ from twins in the womb?

As we have already explained, the difference between twins and twins is explained by the different mechanisms of zygotic formation. But, even as a result of the division of one egg and having the same chromosome set, twin kids in the mother's tummy can develop under different conditions. For example, sometimes crumbs have to share one child's place, and sometimes a single bladder. And if you're lucky, everyone will get his own placenta and bladder. At that time, as the fraternal twins are guaranteed: each has its own fetal bladder and placenta.

The main differences between twins and twins

The external difference between twins and twins is not the only thing, although obvious. In fact, the signs that distinguish identical and identical rabbits are much larger. And, some of them are of fundamental importance:

1. So, twins are mostly same-sex children who have the same gene set, blood group, and a pattern on the fingertips. If necessary, they can serve each other as a donor. Twins can be of different sexes, absolutely different from each other, even their skin color may be different.
2. Also an important difference between twins and twins is the possibility of planning. So, twins are an extremely rare phenomenon, not subject to science and medicine. It is possible to predict the birth of twins: most often such babies are born after hormonal treatment, after the abolition of oral contraceptives, in mothers over 35, as a result of IVF.
3. Many believe that twins have the same temperament and temperament, and twins are different. However, often this is not so. It is difficult to predict anything here, either with the first or with the second. Because much depends on the upbringing of children, and their interpersonal relationships.

It is worth noting that in the early stages of pregnancy it is very difficult to determine the nature of multiple pregnancies. It is especially difficult to predict who will be born: twins or twins, in cases where children of the same sex have their own placenta and a bladder. If the crumbs are of different sexes, it will remain a mystery until the parents themselves whether they will be twins or semi-identical twins.