twins questions

[drache]

I assume you are talking about monozygotic (i.e. single-egg / identical twins). Theoretically, it should be possible, but I guess they end up as conjoined twins when they develop. Two heads, two tails or other similar deformities.

it's probably possible for them to completely separate, but without genetic testing, one wouldn't know whether they're identical twins

[Serpentine99]

it's probably possible for them to completely separate, but without genetic testing, one wouldn't know whether they're identical twins

Mini Ultrasound?