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30-scientific-facts-about-twins-that-will-expand-your-knowledge

Twins has always caused and will cause a lot of emotions. Someone is surprised by their similarity, someone is interested in it, and someone is simply touched by two little kids who look alike like two drops of water.

 

They have their own language, DNA is the same, but fingerprints are different

 

We at Bemorepanda have prepared some fascinating facts that will make you wonder just how special twins are.

 

1. Twins can come from different fathers and even belong to different races.

Yes, it sounds incredible, but it could be true. If a woman ovulates twice and then has sexual intercourse with two different men, it may well happen that both eggs are fertilized. This happens in a certain sequence, which is practically impossible to follow on purpose.

 

The scientific name for this phenomenon is superfecundation (hetero-paternal fertilization). It can happen during IVF. One of the few such cases was reported in Holland. Wilma and Willem Stewart applied for IVF, during which something went wrong, and as a result, two boys were born - one white, the other black. It later turned out that before the procedure, Willem's sperm was accidentally mixed with the sperm of another man.

 

2. Twice as many twins are born today than in decades past

Studies by the US Centers for Disease Control and Prevention (CDC) have shown that the birth rate of twins has increased by 76% since 1980. In 1980 alone, every 53rd child was born a twin, and already in 2009, every 30th.

 

One possible reason is later delivery. At 30, you are more likely to have twins than, for example, at 20. Another reason was reproductive treatments. There is evidence that dairy products are to blame.

 

3. Geminis speak their own language

Surely you have heard that little brothers or sisters spoke to each other in some incomprehensible language, but understood each other perfectly. This language is called cryptophasia and is spoken by about 40% of twins.

 

The fact is that children actively imitate each other, which allows them to gain vocabulary. Often it can be replenished with not the best examples, such as incomprehensible sounds, to which children attach a specific meaning and speak them freely. As the child develops and his real vocabulary grows, the so-called cryptophasia disappears - approximately by the junior school age. But some twins retain this language and use it deftly in later years.

 

4. Different fingerprints

Twins may look like two peas in a pod, but everyone will still have their own fingerprints.

 

5. If twins were separated during childbirth, then scientists will try to reunite them.

There is a heated debate in genetics and psychology to this day about which prevails - nature or nurture. Genetically, twins are very close to each other. However, how does this affect their upbringing, and will twins raised in different environments look alike?

 

It is almost impossible to test this experimentally, since cases of twin separation are quite rare, and no one will separate children specifically for the sake of research.

 

Twins Meredith Grace Rittenhouse and Meredith Ellen Harrington were born in China and adopted by two different American families that did not intersect. Throughout her childhood, Meredith Ellen shared with her parents thoughts that she felt lonely and wanted to have a sister. Subsequently, Meredith's father Ellen came across a photograph of a very similar girl. He immediately turned to the adoption agency to find a second family and arrange a meeting for the girls. When Meredith Ellen and Meredith Grace met, they immediately declared that they were born together.

 

6. The oldest twins were 104 years old

British twins Ena Pugh and Lily Millward were born in 1910. They are listed in the Guinness Book of Records as the oldest twins living on Earth. But later it turned out that the sisters Edith Ritchie and Evelyn Middleton from Scotland are older by as much as 50 years, and the title passed to them.

 

7. Twins can be different ages.

When attempts to conceive a child naturally fail, many parents turn to IVF. To increase the chances of conception, you have to fertilize several eggs at once. Parents can transfer all embryos or freeze them for several years. In the second case, it may happen that the children will be born at different times, but genetically they will be twins.

 

And there are interesting coincidences, as in the case of the Buffalo twins. Ronan is the eldest son, born on December 31, 2011 at 11:37 pm, and his younger brother Rory was born on January 1, 2012 at 00:10 am. The difference is literally half an hour, but it turns out that they were born in different years.

 

8. Diet increases the chance of having twins

This is good news for those who dream of twins and love dairy products. According to studies, they increase the likelihood of having twins.

 

The thing is that milk protein stimulates the ovaries and increases the level of IGF (insulin-like growth factor) by 13 times. Perhaps the culprit is growth hormone, which is actively added to livestock feed.

 

9. The higher the woman, the more likely she is to give birth to twins.

Modern research has shown that the taller a woman is, the higher her level of insulin-like growth factor (IGF-1) is, making the ovaries more prone to ovulation.

 

10. Fraternal Twins

This is a less common type of twins, which occurs as a result of the fertilization of two or more eggs. As a result, twins are born, similar to each other like brothers and sisters, but with different genotypes.

 

11. The twin gene exists

During hyperovulation, a woman is able to reproduce more than one egg, which increases the likelihood of having fraternal twins. Hyperovulation is genetically transmitted, so it is likely that if one of your relatives has this gene, you will inherit it too. However, the appearance of identical twins does not depend on this.

 

12. Moms with twins are more likely to have morning sickness.

It occurs due to the fact that a woman increases the hormone hCG - human chorionic gonadotropin.

 

13. Two pairs of identical twins married each other: who are their children to each other?

Despite the fact that officially their children are considered cousins, they are genetically brothers.

 

14. Siamese twins can "read" each other's minds.

In 2011, The New York Times published an article about the two Hogan sisters, which stated that Siamese twins have a neural connection that connects the two brains. This literally allows them to "read" each other's minds.

 

15. Twins bond before birth

It's no secret that twins are very attached to each other. After all, they spent nine months in their mother's belly. However, attachment is formed long before birth. Doctors used 3D ultrasound to monitor five pairs of twins. Studies have shown that babies begin to reach out to each other as early as 14 weeks of gestation. The physical contact of the twins took up to 30% of the time, and at 18 weeks the contacts became more frequent.

 

16. Brazil is the capital of the twins

In the remote Brazilian village of Candido Godoy, between 1959 and 2008, 8% of the total number of twins were born. By the way, in the rest of the world this figure does not exceed 1%.

 

The initial cause was thought to be a local source of water, but later scientists proved that local women have a hyperovulation gene, which leads to a high twin birth rate.

 

17. Longevity Moms

Scientists from the University of Utah found an interesting pattern. Mothers of twins often live longer than other parents. For the study, data were selected from 1800 to 1970, in which records of more than 59 thousand women were studied.

 

18. Geminis synchronize their sleep cycles.

If one of the babies wakes up and starts crying, the other soon joins him. However, even in adulthood, if one twin does not sleep, then the other is unlikely to sleep either.

 

19. Twins become different

Identical twins are often very difficult to tell apart. They can literally look like exact copies of each other. But a recent article from Live Science published a study that suggests that as they mature, twins may develop differences from each other. It's all about different habits, food, rhythms of life, environmental influences, various substances and other factors.

 

20. Lefties are more common among twins.

According to statistics, there are more left-handers among twins than among other children. According to some reports, about one in five couples.

 

21. There are more twins

Between 1980 and 2009, there were 76% more twins born in the US alone, from 18.9 to 33.3 per 1,000 children.

 

22. Not exactly the same

Many parents sin by dressing twins in the same clothes, giving them similar hairstyles, despite the fact that completely different personalities are sitting inside. Writer Grace Lin spoke about this in her book Ling and Ting: Not Quite the Same. In this book, the writer tells about the life of identical twins with completely different characters and even hairstyles.

 

23. Twins have different ages

Twins are not born at the same time. The difference in their age can be up to 17 minutes, and sometimes more. There were cases when twins were born even on different days.

 

24. Main difference

Twins can be distinguished by their navels, because they have nothing to do with genetics. The only problem is that asking people to show their navels for identification is not always appropriate.

 

25. The phenomenon of the disappeared twin

In medicine, there is such a term as "disappeared twin syndrome." This happens when one of the embryos stops developing in the womb for a number of reasons.

 

26. There are more divorces in families with twins.

The Journal of Obstetrics and Gynecology has published a study that says that parents of twins are more likely to resort to divorce than in other families.

 

27. Record holders for the number of twins

Among all animal species, polar bears most often give birth to twins.

 

28. Identification of twins

To determine pregnancy with twins, doctors use a stethoscope to listen to two hearts.

 

29. Get ready to get better

During pregnancy with one child, a woman can add 11 to 16 kg of weight. And during pregnancy with twins, you need to be prepared for the fact that the increase will be up to 20 kg.

 

30. Where do most twins live?

Nigeria breaks out into the lead in the number of multiple pregnancies. In 2008, about 4% of births were twins.

 

The lowest figure went to China. There, as of 2011, up to 1.1% of twins are born. In the US, Massachusetts, this figure is approximately 3%. This means that up to 4 twins are born for every 100 children.

 

 

 

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@TheMemenator1 amongusineiuncxweinsciunqweiasnciwdsnakc qebwhjncijqdwnas
rules-for-using-child-car-seats-and-other-useful-tips

Buying a functional car seat is not everything, as you need to know how to use it correctly. Studies by the German Institute for Insurance Appraisers (UDV) (data collected from Germany) show that more than 50% of children traveling in car seats are not adequately protected. Therefore, it is important to know what parents are doing wrong.

 

How to choose the right child car seat

 

The fundamental need to fix a child in a car in a special child restraint, and not in the hands of a parent, is primarily due to the fact that during sudden braking (on impact) at a speed of 50 km/h, the weight of the passenger increases and increases more than 30 times. It is for this reason that carrying a child in your arms is considered the most dangerous cause of safety. For example, if the weight of a child is 10 kg, then at the moment of a direct impact, he will already weigh more than 300 kg and it is almost impossible to hold him in order to protect him from a sharp blow to the front seat.

 

What kind of child seat should I buy in the car?

 

Why do you need a car seat? According to the World Health Organization, the use of child restraints in vehicles can reduce infant mortality by 71% and older children by 54%. The use of such safety devices is mandatory for children under 12 years of age in countries with a high level of motorization.

 

The fundamental need to fix a child in a car in a special child restraint, and not in the hands of a parent, is primarily due to the fact that during sudden braking (on impact) at a speed of 50 km/h, the weight of the passenger increases and increases more than 30 times. It is for this reason that carrying a child in your arms is considered the most dangerous cause of safety. For example, if the weight of a child is 10 kg, then at the moment of a direct impact, he will already weigh more than 300 kg and it is almost impossible to hold him in order to protect him from a sharp blow to the front seat.

 

What is a car seat?

 

A child car seat is a restraint designed to carry children in a car. The car seat is designed for small passengers, from their very birth until the child reaches a height of 150 cm or a weight of 36 kg.

 

The main task of the car seat is to ensure the safety of the child during a traffic accident, as well as during emergency braking or sudden maneuvers of the car. Its need for a car is obvious, such a car seat reduces the likelihood of fatal injury. A prerequisite for this is the correct installation of such a car seat in the car.

 

How to properly transport a child in a car seat?

Pay your attention to the instructions for installing the car seat in the car. Ask the consultant to show you personally how to secure the seat in the car and how to properly fasten the child in it. After placing the child in the car seat, fasten it with the inner belts or three-point seat belts, depending on the group of the car seat. Be sure to check the tension of the belts, they should not sag or hang out. When traveling by car, give your child only soft toys for play and fun. For babies, use only special toys provided specifically for car seats. If your child watches cartoons during the trip, then keep in mind that all hard objects must be carefully secured. Do not give your child a DVD player or a book.

 

A child with a height of at least 135 cm is allowed to ride without a car seat. But he must sit in the back seat, fastened with a seat belt. However, it does not fit into available car seats. It is also important to develop appropriate habits in young passengers so that they understand how important safety is. Older children must be fastened to the car seat with a seat belt. Parents are obliged to check whether the child really did it right.

 

 Vehicles that are not suitable for attaching child seats may not carry small children on public roads.

 

At the same time, many say that before, when there were no special child seats, it was easy to do without them. But to understand the seriousness of the issue, one should compare modern accident statistics with data from 30 years ago. Dry statistics show that, despite the lower traffic activity, there were more injuries caused by accidents than today. Therefore, reliable protection of the child in the car is a fundamental issue that parents must decide.

 

How to choose the right child seat

 

The model must first of all correspond to the height and weight of the baby. If the seat is too small, the child's head will protrude beyond the contours of the backrest, which will not provide adequate support in a crash. If the car seat is larger, then the harness geometry will be incorrect. At the same time, the seat should not only be comfortable for the child, but also match the layout of the car.

 

Theoretically, the seats are universal, but in practice it often turns out that the seat base cannot be securely installed on the rear sofa. Often this is due to the strongly defined contours of the sofa. It happens that a large, deep and elongated seat is not suitable for safe use in a particular model, since the narrow door does not allow the parent to comfortably place the child and fix it correctly. For those with two or three children, the situation is complicated by the need to install multiple car seats.

 

Although ordering online is convenient and usually cheaper than in regular retail outlets, you should choose a car seat in real life - with a car and a child. It is worth comparing different models in terms of ease of use and ask the seller to test install a particular seat in the car.

 

How to properly install a car seat

 

Unfortunately, not all car seats are intuitively easy to install. Therefore, a common mistake is the incorrect installation of a car seat. Models that are secured with seat belts are cheaper, geared toward older children, and tend to cause the most problems. The correct positioning of the belts and their maximum tension is of decisive importance here.

 

If the child seat swings freely in the rear seat, it does not provide enough protection for the small passenger. Most seats have assembly instructions on the side or base showing the correct positioning of the straps.

But the owner of the car often faces problems. Sometimes the car has too short seat belts. In this case, a belt extension is used. It happens that the seat cannot be tilted due to the shape of the seats.

 

Even the fastening system, made in accordance with the Isofix standard, does not guarantee the absence of problems. In addition to the metal snap-on brackets located between the back of the chair and the car seat, a top strap or additional support is usually used for proper attachment. It is located between the base of the seat and the floor of the car.

 

The top strap is attached to the clips on the back of the sofa. Its function, like the retractable support, is to prevent the uncontrolled movement of the child seat in the event of a collision. The sofa of the car to which the child seat is attached is usually quite soft, and the Isofix latches can act as hinges, extending the seat by almost a quarter of a turn. As a result, the risk of hitting the back of the front seat increases.

 

 

Attention! Before installing the seat, you should carefully study the technical documentation of the car, find recommendations regarding the installation location of the child seat. In many vehicles, due to the design of the seats, the type of cushions or side curtains, secure locking is only possible in some places.

 

How to use seat belts correctly

Most children are simply not properly seated. It should be noted here that the inertia belts used by adults automatically adjust the tension, provided that they are in good working order and the passenger is sitting correctly. But the child seat belts are tightened by hand. This often requires effort, so to make the child comfortable, the force with which the belts are tightened should be dosed so as not to provoke injury.

 

In this case, the child in the car seat must be secured like a driver in a sports car. The back of the baby is firmly pressed against the back of the chair, and a hand should be difficult to crawl between the body of the child and the belts.

 

The belts must not be twisted, because in this state they will not evenly distribute the load. It is not allowed that the belt rubs against the child's neck, while providing support for the pelvis without a snug fit against the baby's stomach.

 

 

It should be remembered that:

 

1. In cars that do not provide for the possibility of installing a seat for a child, you cannot carry it on public roads.

 

2. Straps should fit snugly against the body and not create discomfort.

 

3. The airbag is deactivated when a child seat is installed on the passenger seat.

 

4. If the straps are too long, it is better to choose a different model of the child seat. At the same time, the safety of the child largely depends on the attention and driving style of the parent behind the wheel. Therefore, follow the Rules of the Road and carefully follow the road so as not to endanger the baby.

 

 

 

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