- Joined
- Jul 29, 2018
- Messages
- 11,190
- Reaction score
- 74,059
Oh, I can vouch for this.
I am an identical twin. We have the same face. Sometimes even we ourselves aren’t certain of who is whom in pictures and we have to look at our jewelry or something to figure it out.
Yet we are otherwise opposites in every way. She’s OCD-ish about cleanliness and I’m more sloppy. She loves meat which I won’t eat and I love cheese which she won’t eat. We married very different types of men. She had breast cancer when we were 31 and I haven’t had it, though we have identical DNA (on 23 and Me, she and my eldest granddaughter matched as grandmother and granddaughter). And a thousand other differences in our personalities.
Yet we biologically have the same nature and grew up with the same nurture. Siblings in the same household with the same parents don’t really have exactly the same parents, because they arrive at different times in the parents’ lives, but not us.
So while I recognize the importance of nature and nurture, IMO sometimes, for some unknowable reason, someone is just a “bad seed.” This is what I think about many notorious murderers who appear to have loving and stable families as they were growing up.
JMO and experience.
ETA: if either of us did something criminal, I suppose we could hide behind the identical DNA, but no identical twins have the same fingerprints so we’d get caught that way. (Fingerprints are formed by how each baby touches the mother’s womb).
Identical twins differ. In general, by 5.2 genetic mutations + epigenetic changes. Not in all, but in some paternity cases it was possible to find out which genetic twin was the father. It is all very new, of course.