Interesting facts about twins: from fertility to genetic features:
- Twins are born often. Since 1980, the birth rate of twins has increased by more than 70%, due to the spread of artificial insemination methods. The chances of giving birth to a twin depend on the nationality of parents, where African Americans are particularly fruitful, and in women, the chances are very small-one in 250 cases.
- The same outside, different inside. Singal twins can be genetically different, and their differences can lead to various chronic diseases, even if they look the same.
- Genes decide. Studies show that twins divorced in childhood can still have common features such as positions and passions that support the importance of genetic influence on human behavior.
- Twins live longer. Twins live for 5 years longer than simple twins, and they, in turn, are worried about 3 years of ordinary people. The social connection between twins contributes to the responsible attitude to health and mutual support.
- Mother twin is hereditary. The ability to have twins can be transmitted inherited through two genes that affect the production of follicular stimulating hormone (FGS). The high level of this hormone increases the chances of the birth of two eggs, leading to twins.
