9 Amazing Facts About Twins You Don't Know

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Medical Video: 10 Mind Blowing Facts About Twins

Twins are a phenomenon of birth that is so special, that not all regions have equal opportunities. Central Africa ranked first in the world's highest twin birth rate with 18 pairs of twins per 1,000 births. Benin, one of the countries in central Africa has a twin birth rate of 27.9 twins per 1,000 births. Meanwhile, Asia and Latin America have a much lower average of twins, which is less than eight per 1,000 birth rates, reported by Live Science.

Check out the article below to find out more surprising facts about twins

1. Identical twin fingerprints are not exactly the same

You might think that a pair of identical twins have the same fingerprint because they also share an almost identical DNA strand. Well, this is not true. Fingerprints are not solely based on the "destiny" of DNA. When identical twins are still in the womb, they initially have the same fingerprint, but starting from the sixth to 13th week of pregnancy, as the baby can move a lot, each child touches a different amniotic sac. This activity affects the changes in the shape of the grooves and twists of each child's fingerprint, resulting in unique and different fingerprints.

Navel twins are also not identical. Belly button is a scar from severing the umbilical cord after birth, so the shape of the navel is not caused by genetics.

2. The features of the faces and bodies of identical twins can not be exactly the same

About 25 percent of identical twins growing in the womb face each other, which means they are an accurate reflection of each other. One child may be right-handed and the other is left-handed, has a birthmark on the opposite side of their body, or has hair curls that rotate in the opposite direction. This occurs when the twins separate from one fertilized egg after more than one week after fertilization.

3. Twins have interacted with each other since the womb

In 2011, researchers at Umberto Castiello of the University of Padova in Italy studied the 3D videos of twins in their mother's womb. At the age of 14 weeks of pregnancy, a pair of twins are seen reaching for each other. At week 18, they seem to touch each other more often than touching themselves. The researchers say that kinematic analysis of the recordings revealed that the twins made different movements towards each other and were as gentle as touching the eye area of ​​the other twins when they touched them themselves.

4. Some Siamese twins can feel and taste what one child feels

A pair of conjoined twins, Krista and Tatiana Hogan, are able to feel what the other twins are experiencing and understand each other's thoughts. When the sight of one of the twins moved away from the television, he could laugh when the other twins were looking at the flashing image right before his eyes. This sensory exchange, researchers believe, also extends to the senses: Krista likes tomato sauce, and Tatiana does not, a new preference was discovered when Tatiana tried to lick the remaining tomato sauce from her plate, even when Tatiana was not eating at all.

These two conjoined twins are connected in the head through the "thalamic bridge," the part of the brain that acts as a kind of control over a number of nerve activities in the brain and filters out most sensory inputs. But…

5. Twins may not necessarily be telepathic

There are many anecdotal stories about twins' telepathic abilities. Sometimes, one twin experiences a physical sensation that reflects what is happening to the other twins (such as labor pain or a heart attack). At other times, they find that they do the same thing when they are separated, such as buying the same item, ordering the same food in a restaurant, or picking up the phone to make a call at the same time. They may seem to know the contents of each other's thoughts, by speaking together or completing their respective sentences.

Tens of years experts and scientists have proven telepathy, there is no strong and reliable scientific evidence that is able to prove that this supernatural psychic power is real, both in the general or special human population among twins. But, even though the evidence of his knowledge is inadequate, personal experiences remain undeniable. "Telepathy" between twins occurs for unclear reasons, some believe that it is only a natural instinct that is much stronger siblings.

6. Twins have their own language

If you've seen two twins talking in a strange way like nonsense chatter, you might witness idioglossia - autonomous language between twins. About 40 percent of twins create their own language. The researchers believe that the siblings are super-close (they don't really have to be twins, but usually) sometimes use each other as a model for vocabulary learning, applying the meaning of sound - when language models from adults are absent, even if they sound that is bullshit. Usually their unique language disappears as their vocabulary knowledge grows and becomes rich - and when children start school, but not always.

7. Different father's twins? May be!

Eits, don't be surprised. A woman can remove two eggs during ovulation and then be fertilized by two different men at a fairly close time at the same time - also known as heteropaternal superfecundation. Sperm can live long enough in the womb (3-5 days) to open the opportunity for pregnancy, each sperm can fertilize one egg, produce twins. The phenomenon of different fathers twins is quite common in dogs and cats, but is very rare in humans. Interestingly, different twins of fathers can also have different races and ethnicities, depending on each of their fathers.

Heteropaternal superfecundation can also occur as a result of a failed IVF procedure, in which selected father / donor sperm is mixed with other sperm samples during the process.

8. Twins can vary in age to monthly - even yearly

A very rare condition, called superfetation, occurs when a pregnant woman continues to menstruate and a second embryo is formed from it. Often, the last conceived fetus (youngest twins) will be born prematurely, while the first baby is born on time. But in some cases, twins are born on the same day.

Twins who are of a considerable age can also be caused by IVF. For example Ruben Blake and his twin brother, Floren, who are five years old. Both parents Reuben and Floren underwent a IVF program and implanted two embryos in the mother's womb. Only one succeeded: Ruben. Then, the couple decided to freeze the other embryos. A few years later, they planted another embryo and Ruben's twin sister, Floren, was born into the world.

"Actually, this depends on how you interpret the term 'twins' - twins generally mean children born at the same time," said Valentine Akande, MD, chief physician and director of fertility facilities at the Bristol Center for Reproductive Medicine, reported from Everyday Health . "But, yes, twins born from the same collection of embryos, taken from the same treatment cycle also include twins - only born at different times."

9. If one gay twin, the other is not necessarily

Identical twins come from one fertilized egg that contains a set of genetic instructions, known as the genome, but it is still possible for a pair of identical twins to have a big difference in their genetics. Identical twins have the same DNA base, but epigenetic changes during the womb can make a big difference in what happens to them later on.

New research shows that clues to sexual orientation may lie not only in genes, but in gaps between DNA, where molecular signs instruct genes when it's time to be active and inactive and decide how strong their genetic expression is. From the moment a child is conceived until during his lifetime, genetic changes can occur, and they can be passed down from generation to generation. This is called epigenetic change. The code underlying DNA remains unchanged, but how genes are expressed - how they work - can change.

In identical twins, DNA is shared together and overlaps perfectly. But the existence of twins where one homosexual and the other does not offer strong evidence that there are factors other than DNA that also affect sexual orientation. Ngun, a postdoctoral researcher at UCLA Geffen School of Medicine, was quoted from LA Times combing genetic samples from 47 pairs of identical twin men. He succeeded in identifying "epigenetic signs" in nine regions of the human genome that were strongly associated with male homosexuality. Thirty-seven of the twin pairs consisted of one gay twin while the other was heterosexual. Only 10 of the subjects of twins who were both twins identified themselves as homosexuals.

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9 Amazing Facts About Twins You Don't Know
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