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[-] Anticorp@lemmy.ml 19 points 1 year ago

My best friend is a mirror twin. His brother cried a lot more as a baby. When they became toddlers his brother complained a lot more. Now as adults, his brother still complains and argues a lot more. I don't understand how they can be genetically identical, have the exact same upbringing, and be so different from the moment of their birth, but they are.

[-] Shunned_Marble4378@feddit.de 5 points 1 year ago* (last edited 1 year ago)

he was the second sperm that entered the egg

[-] Anticorp@lemmy.ml 12 points 1 year ago* (last edited 1 year ago)

That's not how identical twins are formed. An egg, fertilized from a single sperm, splits into two, creating two people with identical DNA. You're thinking of fraternal twins, where two separate eggs are fertilized by two separate sperm.

[-] Shunned_Marble4378@feddit.de 1 points 1 year ago
[-] funkpandemic@lemmy.ca 5 points 1 year ago* (last edited 1 year ago)

Normal: 1 egg + 1 sperm make 1 person

Identical twins: 1 egg + 1 sperm make 2 person

[-] MuffinHeeler@lemmy.world 2 points 1 year ago

Fraternal (non identical twins): 2 eggs + 2 sperms make 2 person

[-] Shunned_Marble4378@feddit.de 2 points 1 year ago* (last edited 1 year ago)

so i just read the wikipedia article and i don't udnerstand what it says. i'll stick with my missconception xD

/s obv

[-] Anticorp@lemmy.ml 1 points 1 year ago

I edited my comment with more details at the same time you were responding. Check above.

this post was submitted on 08 Aug 2023
416 points (100.0% liked)

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