I wasn't real clear on that either.
They said the children were carried by local Mexican women who thought they were part of some medical trial, but I don't recall if it was specified with they were just surrogates or also their biological mothers. That said, the nurse said something to the effect of "their fathers are special seeds in bottles" which when considered next to Dafne Keen's Spanish heritage make the latter seem quite likely.
I suppose some epigenetic process could be at work, but I doubt it'd be anywhere near so pronounced as to alter her apparent ethnicity.
This time, X-23 was a biological daughter and not a clone, wasn't she?
IIRC the version in the comics is technically neither. The initial intent was to create a straight clone of Logan but something about his Y-chromosome prevented a viable specimen being created. So they doubled up his single X-chromosome to make a female version instead.
In a way she's half a clone, or maybe a daughter for which he was both parents. I'm not sure there's even a specific word for that.
No idea if this is even vaguely plausible, but then neither is a healing factor, so who cares?
Clones are straight copies of organisms that are grown as a whole, just like any other.
This thing appears to have been assembled from separate, specially tailored parts and then surgically integrated. A detailed, painstakingly re-constructed and subtly altered replica of the original. When you make a clone, there's generally not a "some assembly required" label on the test tube. They also don't generally start out as full grown adults.
It's the difference between a photocopy and precisely retyping the entire document, with a few key edits and a slightly different choice in the typeface. The end result may look very similar, but it's an entirely different process.
