What is the main difference

In medical terminology the following concepts are used:identical and fraternal twins. Twins are two or more children who grew up together in the womb and were born at about the same time. Fraternal twins are usually called twins, and identical twins are simply called twins.the difference between twins from twinsOnly the closest people can notice the difference between twinsPhoto: Getty Here's what distinguishes them:

  • Twins can be of the same sex or different sexes. But twins are always just same-sex.
  • Twins are always identical. They are very difficult to distinguish externally, especially to strangers. They have the same blood group, the same disease and complete portrait resemblance. And twins look like brothers and sisters, as if they were born at one mom, but at different times.
  • Twins are born approximately once in 4 thousand births. Trips are more common, only once in 1000 births.
  • To conceive twins, only one egg is needed, but triplets - 2 different eggs.

When conceiving in a test tube, the chance of giving birth to twins increases. Also, the probability of giving birth to twins increases in women who take hormonal contraceptives for a long time before conception.

Difference in fertilization with twins and twins

Twins are born from a single egg,which requires only one sperm for fertilization. Then, for reasons unknown to science, it divides into two parts. As a result, genetic copies are formed. Each of the cells will develop into an independent embryo. Twins are most often born to women between the ages of 30 and 40. Twins arise from two eggs fertilized by sperm. They can even have different fathers. This happens because in rare cases, during ovulation, two eggs are released from a woman's ovary. Although usually only one is released. For this reason, fraternal twins or triplets are born in a family. So, twins are natural clones who have identical appearance, character, and even hereditary diseases. They cannot be of different sexes. And twins are these are brothers or sisters or a brother and sister who have similarities and differences, as if they were not born at the same time, but as a result of different pregnancies from the same mother.

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