What are mirror cufflinks

What are mirror cufflinks

The strange phenomenon of twins mirrors It is a fact that occurs very rarely between 25% of cases. The term "mirror" is applied to the effect that the children who are born are totally identical, like two drops of water.

They are children who are born being identical twins, that is, they have been created inside the uterus thanks to the fertilization of an egg and a single sperm. They form a zygote and which in turn divides into two embryos. For more detail we will analyze what more features they have.

What are mirror cufflinks like?

As we have already indicated, they are identical twins. They are identical or monzygotic twins. They have a peculiarity, that they have been created thanks to the fertilization of an egg and a sperm, and in turn, create a zygote and it divides into two embryos. At the same time they have another great characteristic, these twins develop and they share the same placenta and amniotic sac.

Why are they different from other twin pregnancies?

Twin pregnancy can be distinguished from one to the other by the time the zygote creates its division. There are different cases:

Non-identical or dizygotic twins

They are called twins. It is the result of two embryos inside the womb, but in this case the woman expels two ovules and both are fertilized by two different sperm. In this case we are talking about two babies that have developed in the same uterus and have not shared the amniotic sac, or the placenta, nor do they have the same genetics. Two out of three multiple pregnancies are of this type.

What are mirror cufflinks

Identical or monozygotic twins

They are the ones already described. This is when the egg has been fertilized and where the zygote splits in two. When dividing, two embryos are created with the same genetic load.

  • Bichorial and diamniotic. The zygote divides three days after fertilization. In this case, the embryos that have formed are nourished by their own placenta and develop in their own amniotic sac.
  • Monochorionic and monoamniotic. The division of the zygote is done much later, between the seventh and thirteenth day of fertilization. Here the embryos share the same placenta and the same amniotic sac. This is where the mirror twins can be framed, although they create the characteristic of dividing between the ninth and twelfth day after fertilization. In this case, a division of exactly the same cells, one left and one right.

At this point it may be the case of vanishing Twin, where one of the embryos does not finish developing and is absorbed by the mother, by the placenta or even by the other brother. This case is known when a routine ultrasound has been done in the sixth month of pregnancy and it has been observed that there are two or more embryos. Later, in another subsequent ultrasound, one of them disappears and the other continues to develop without problem.

What are mirror cufflinks

Peculiar characteristics of mirror cufflinks

These children are observed for their peculiar characteristics when they are born. The organs that have developed in their bodies can be created in the opposite way. Both the heart, liver and spleen have been placed from one to the other on opposite sides of their bodies. is the call “situs inversus” and it occurs very rarely, only one case in 10.000. Even the mirror effect can be created with very insignificant features such as hair, birthmarks or moles.


Data has also been detailed where it has been observed that they can do reverse things, one can become left-handed and the other right-handed, they even sleep in reverse. Their behavior has even been studied, where one reflects one reverse psychology to the other.

In most cases this type of twins are diagnosed by the parents themselves who observe some of the characteristics already explained. It should be noted that These types of pregnancies are very rare, but not impossible. In this case, surely you know of a case.


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