Responses
If twins are clones of each other then yes they would be full siblings but if not then no. I think even identical twins have differing dna which would mean they would only be half siblings.
Not sure though.
Yes, even identical twins, by the time they are grown, have differing dna--no closer than normal siblings. (I actually have done some serious research on this. :) )
guise, the question isn't "can babies happen without being gross?" cuz Toma can be impregnated by one twin and impregnate the other (or both, lol).
the question is "would the babies be full siblings or half siblings?"