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6 Types of Twins That Are Extremely Rare
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4,479,761 Views • Feb 9, 2020 • Click to toggle off description
Did you know there are more types of twin than just identical or fraternal? There are actually 6 types of twins that are extremely rare, and can teach us a lot more about the science of human development. Join Hank Green for a interesting journey into the world of rare twins.

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Sources:

www.twins.org.au/images/general/publications/Mecha…
www.smithsonianmag.com/science-nature/brief-histor…
www.ncbi.nlm.nih.gov/pmc/articles/PMC5603179/
www.ncbi.nlm.nih.gov/pmc/articles/PMC6509934/
link.springer.com/article/10.1007%2Fs00381-004-098…
www.ncbi.nlm.nih.gov/pmc/articles/PMC5134060/
www.scientificamerican.com/article/3-human-chimera…
science.howstuffworks.com/life/genetic/chimerism-b…
link.springer.com/article/10.1007%2Fs10815-013-010…
www.cambridge.org/core/journals/twin-research-and-…
www.livescience.com/61890-what-is-chimerism-fused-…
www.ijdb.ehu.es/web/paper.php?doi=10.1387/ijdb.082…
www.theatlantic.com/science/archive/2019/03/these-…
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Views : 4,479,761
Genre: Education
Date of upload: Feb 9, 2020 ^^


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YouTube Comments - 9,225 Comments

Top Comments of this video!! :3

@Master_Therion

4 years ago

My father was a conjoined twin so I called his brother... my uncle on my father's side. But then they were surgically separated, so now he's my uncle once removed.

33K |

@annalacey9392

4 years ago

Me at 10 pm: I should go to bed. Me an hour later: Ooooh rare types of twins

2.6K |

@dizzysdoings

1 year ago

I remember hearing about a woman that had all kinds of legal problems because her children didn't share her DNA. They even had someone in the delivery room when the one child was born to be sure that she was actually the one giving birth. I don't recall all the particulars now, but they did eventually realize that she was a chimera. I've sometimes wondered when a DNA test comes back negative and the mother insists that no one else could be the father if it's a matter of chimerism.

543 |

@YoxB.

8 months ago

I have a cousin who has 2 uteruses which is rare, but what is even more rare is that she found out one day that the second one became functional (which is super rare 1 in 25,000) and she was carrying two babies that weren’t quite twins. They were conceived at different times but ended up being born together. I don’t know if u didn’t cover this because they aren’t quite twins or u just didn’t know about this, but it’s super cool!

172 |

@LeRoiJojo

4 years ago

"Sir, your son has your brother's DNA." "It's because I'm a chimera, right? Right? Please tell me I'm right!"

4.1K |

@sarahj9459

4 years ago

Someone once asked my twins "are you identical?" My son said, "no, we're infernal."

2.5K |

@heidifedor

1 year ago

My fiancé had a fraternal twin, but he looked more like his older brother than his twin brother. When he found out that he had lymphoma, and needed a stem cell transplant, both brothers were tested for possible stem cell donors. The twin brother was ranked 4 out of 10 for an ideal match, but the older brother ranked 10 out of 10 and was a perfect match.

799 |

@SeaBlueJay

1 year ago

My youngest sibling was/is a Chimeric Twin. The twin passed due to my Mum's hypothyroidism very early on in the pregnancy. (My Mum didn't even know it existed until it had passed.) My sibling absorbed his twin, but it turns out the twins umbilical code stayed in the womb. During my siblings birth the twins umbilical cord almost choked him to death. My freaked out Nanna removed the cord and did her best at attempting CPR. My sibling is now 13 and healthy. When he was younger he would play with his imaginary friend. He said she looked like him and shared his birthday. He didn't know he was a twin at the time.

500 |

@pmw5422

4 years ago

Sooo there's identical twins, fraternal twins, and everything that can go wrong in the formation of either.

8K |

@lyndseywilkinson7802

4 years ago

When my mother was pregnant with me, they did an ultrasound and found she was having twins. When they did another ultrasound a few weeks later, they discovered that I had resorbed the other fetus. Do I regret this? No. I believe his tissues has made me stronger. I now have the strength of a grown man and a little baby.

10K |

@jater242

1 year ago

I am a triplet and I find it very strange that people don't find us as fascinating as twins. Even fraternal twins people view as somehow an identical duo with a special bond, but I have never come across anyone thinking that about myself or triplet siblings just because there's one extra of us? Lol. It's like people view us more as three's a crowd to a pair.

247 |

@eph2vv89only1way

8 months ago

I used to be a member of Twinless Twins International, a support organization for twins whose twin has died. A woman in our group was a mirror image twin. She said something that her dentist found amazing was the fact that even their cavities were mirror image. So weird

46 |

@reiakari

4 years ago

My twin and I are mirror twins. I'm left handed, my vision is strongest in my left eye, my natural hair whirls on the left. All of that is reversed on my twin. Also our dentist noticed that our dental x-rays are practically the same, just flip one x-ray over and they'll almost line up exactly.

6.5K |

@darthsilversith667

4 years ago

When I tell people that i have a twin sister and they’re like.. “are you identical!?!”... I’m a man.. 🤦🏻‍♂️🤦🏻‍♂️🤦🏻‍♂️

4.8K |

@lolasicking9752

7 months ago

My mother was a triplet. My mom and her sister were identical. In fact they shared both an amniotic sac and placenta. They had a brother as the third triplet. They were born at home delivered by their father and a neighbor. They were the first triplets recorded in Waco, Tx. All 3 survived to adulthood. Something unusual in 1930.

22 |

@reneematlock9657

1 year ago

I have 30 year old twins who share more than 50% of their DNA. They are male/female fraternal twins. We have assumed for years that what happened is that they were one under-developed egg that was released and then split to two eggs prior to both being fertilized. I have no idea how whatever happened and I'm "okay" with not knowing - my kids are absolutely amazing no matter how their genetic oddities happened.

178 |

@thomasthetrain3375

4 years ago

The Riverdale writers are frantically taking notes on this video as they get ready for the next big twist

4.2K |

@queenoblivia

4 years ago

no one knew my mom was having twins until about a minute after I was born and the doctor was like, "Uh...hold up. There's another one up there."

3.9K |

@colbiewinters3863

1 year ago

I’m an identical mirror twin. It’s the weirdest thing. We are complete opposites from birthmarks all the way to teeth and personality. I’m majority left handed except for writing, my twin is right handed all the way. Sometimes it’s hard to believe we’re related and came out of the same birth canal. We’re so different sometimes I think doctors made a mistake. Lol. The weirdest part of it all is I ended up with 2 different colored eyes and darker skin than my twin. She has pure blue eyes, milky white skin and I ended up with one green and one blue eye with one eye having central heterochromia and beigey skin. Very odd.

180 |

@DragynGirl

1 year ago

I always love to amaze people with twins in my family. My fraternal grandfather had identical twin brothers that both passed when they were 8 months old. My father is an identical twin and is the oldest of the pair. He fathered my younger brothers, again identical twins. The oldest of them fathered identical male twins 6 years ago. So we have 4 recorded uninterrupted generations of identical male twins in my family. We do have a great picture of my Dad and Uncle with my brothers each holding one of my nephews when they were maybe around a year old - 3 generations of identical male twins, Twins having twins having twins!

414 |

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