![]() ![]() Fraternal Twinsįraternal twins are obtained when two (or more) eggs are fertilized by different sperm in the same menstrual cycle. In most cases, the reasons for the birth of monozygotic twins are not clear. This suggests that genetics may still have some kind of influence, but there is no confirmation of this yet. However, in some families there are more frequent cases of identical twins. Scientists believe that in most cases of identical twins, genetics has nothing to do with it. ![]() Identical twins are found in 3-4 cases per 1000 births. This leads to the appearance of two embryos with an identical set of genes. Identical twins are created when an egg fertilized by a sperm cell splits in two at an early stage of development. In order to understand what causes twins, it is necessary to distinguish between 2 types of twins: A variety of external factors also affect the appearance of twins. The likelihood of having twins depends on many factors, and genetics does not play a major role in this case. This is due to the rise in the average age of mothers, as well as the development of reproductive medicine. ![]() Multiple pregnancies are much more common today than they used to be. ![]()
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