yes. that’s why star trek is bullshit in that regard. if we ever met extraterrestrials and they happen to look anything like humans at all, the biochemical differences will be so severe that there’s absolutely no chance at all that they would be able to produce viable offspring with humans.
But for a bigger picture question, are all of those others able to interbreed with each other, as well? If yes, they are basically like different races of human or breed of domestic animal. If not, it gets much more interesting in terms of classification.
Does this mean humans are the same species as vulcans, klingons, romulans, betazoids, trill, ocampa, and ktarians?
yes. that’s why star trek is bullshit in that regard. if we ever met extraterrestrials and they happen to look anything like humans at all, the biochemical differences will be so severe that there’s absolutely no chance at all that they would be able to produce viable offspring with humans.
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The original retro-futuristic furries.
Presumably yes.
But for a bigger picture question, are all of those others able to interbreed with each other, as well? If yes, they are basically like different races of human or breed of domestic animal. If not, it gets much more interesting in terms of classification.