The concept in medicine



First of all, in traditional medicine such concepts as "twins" and "triplets" does not exist. Uses the terms "identical twins" and "fraternal twins". The people of fraternal twins are called fraternal twins and identical – actually twins. While the word "twins" can equally be understood as those and others.

In the case when one fertilized egg in the uterus is divided into two, three or even four parts, developing identical twins – they are called identical. The mechanism of the birth of twins or triplets is very different. They appear when two or more eggs fertilized by different sperm and develop independently from each other.

Similarities and differences of twins and twins



Identical twins always the same sex. At first glance they usually seem to be indistinguishable similar to each other. They are often confused even mom and dads, especially at an early age. Often during the infancy of identical twins have repeatedly "change" names, and in the future may well wear the same clothes. These twins always share the eye color, skin tone and hair, General facial features.

As for fraternal twins – fraternal twins – they can be same sex or different sexes. Between them usually similarities than between ordinary brothers and sisters. That is, in principle, the similarities can hardly be at all – if, for example, one child "went to mom" and the other "daddy."
Twins can be of different height, complexion, in some cases, even different skin colors (of course, if their parents belong to different races).


Identical twins are the same group and the factor of blood, it is the same set and the ratio of genes. They always can if necessary serve for each other donors of blood, tissues and organs. Of course, with all this they are still different people. Do not forget that in germ and somatic cells with a certain frequency mutations occur. In addition, his personal experience accumulates each of the twins still own.
Identical twins repeating most diseases.


Heredity fraternal twins can be the same or different as those born at different times brothers and sisters, and their organs and tissues may not be compatible for the transplant.

To plan the birth of twins or twins, alas, almost impossible. However, it is known that most twins and triplets born to women whose families already had multiple pregnancies. In addition, the probability of having twins increases at the age of 35-40 years. Identical twins are born with equal frequency at any age.