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Did anyone really think that twins were the same right down to each individual gene? Just seems intuitive that there'd be some slight differences between ident
by ravenstine 6y ago
Did anyone really think that twins were the same right down to each individual gene? Just seems intuitive that there'd be some slight differences between identical twins.
- hprotagonist 6y agotwins? hell, you’ll see different sequences between individual cells in the same person.
- zinekeller 6y agoYes, it indeed happens on a non-chimeric person (just try comparing the DNA from a muscle in arms versus legs, or even head hair and genital hair). I don't know the point of the study (except if it is just to undeniably confirm this scientifically because some doctors still don't believe that identical twins are not quite identical).
- zxcb1 6y agoAnd then there is the microbiome ...
- irrational 6y agoWould the microbiome be similar growing up (assuming both are living and eating the same foods in the same places/family) and then diverge later when they go their separate ways?
- zxcb1 6y agoFrom what I understand, it is a continuous exchange with our environment, the same way we catch a disease.
- hobofan 6y agoI would assume that the point of the study is to also quantify the amount of mutations so that future twin-based studies can more accurately attribute differences that also exist between twin pairs.
- rootusrootus 6y agoThat's interesting. I wonder what the typical variation is within a single body, versus between monozygotic twins.
- leemailll 6y agoWell, I can give one well-known example for this in genetics. Females carry two X-chromosome, against male's X and Y. There is one thing called X-inactivation, which means one of the X chromosome in the cell is inactivated randomly in cells. By this, even organs only carried the same kind of cells are mosaic in aspect to genes in X chromosome. Then think about a well-know X-chromosome linked disease, the Rett Syndrome, and the cell in body, in the brain.
- williamdclt 6y agoWhy "intuitive"? It seems far from obvious that they'd be different when they come from the same sperm and egg cells. Does "anyone" really think that? I, who's well more versed in sciency things than the average although I never really thought about this particular subject, would have guessed that they have the same genetic code. So yes, I'd guess that a big proportion of people would think that