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He Twin’s Day is celebrated every December 21 in Argentina, with the aim of giving greater prominence to all people who were born as a result of multiple pregnancies. Although they are often confused with twins, their difference lies in the moment of fertilization. Twins are a biological phenomenon that occurs through a same sperm and an egg that divided into two; while twins originate from two eggs and two sperm.
There is no accurate historical data that confirms the origin of this day. However, it is known that The date was chosen because of the symmetry that occurs between the figures of this day: 12/21. The bbc indicated that per year Approximately 1.6 million twin babies are born in the worldwhich represents 1 in 42 children.
Curiosities about twins
- The mirror twins: in the 25% of overall births identical there is a phenomenon of mirror cufflinks. This is a late separation of the zygote, at a time when the cell has already defined its right and left side. In this way, brothers have symmetrical and opposite characteristics to each other.
- In 2021, Umeno Sumiyama and Koume Kodama achieved the Guinness Record for the oldest identical twins in the world. They are natives of Japan and were born on November 5, 1913 on the island of Shodo, Kagawa prefecture.
- Fingerprints: One of the biggest myths about twin births is about their tactile impression. Contrary to what is believed, They do not have the same fingerprints. This is because during the gestation period, the fetuses touch the amniotic sac of the uterus with their fingers, which forms its lines.
- Twins record: According to the records of a report from the local Moscow monastery, between the years 1725 and 1765, a woman gave birth to 69 children. The lady named Vassilyev had 16 sets of twins, seven sets of triplets and four sets of quadruplets, in 27 different births.
- Cryptophasia: it is a own languagewhich 45% of twins are believed to develop during their first stage of life. This is brought about by their attempt to acquire speech, as they manage to understand each other and forge a united bond. In this way, in many cases they create a dialect that only they understand, to be able to communicate exclusively.
- Record: In the United States, Lori and George Schappell were the oldest conjoined twins. They died at the age of 62 years and 202 days, on April 7, 2024. They were born on September 18, 1961 in Pennsylvania. They had partially fused skulls, shared vital blood vessels and 30% of their brains.
- Greater probability: Women over 35 are more likely to have twinssince at this age they have a greater amount of follicle-stimulating hormone (FSH).
- Record for the largest consecutive generations of twins: there are three families that hold this recognition, the Rollings, Sims and Taylor family, with four consecutive generations of twins.
