3 ms·
Genuine question: how would we tell/know if it was more than once? Doesn't other life-2 floating around in the primordial soup look like food to life-1? Or wou
by conjectures 2y ago
Genuine question: how would we tell/know if it was more than once?
Doesn't other life-2 floating around in the primordial soup look like food to life-1? Or wouldn't it be co-opted mitochondria style?
- cmiller1 2y agoThere's a whole wikipedia page answering exactly this question: https://en.wikipedia.org/wiki/Evidence_of_common_descent https://en.wikipedia.org/wiki/Evidence_of_common_descent From biochemical similarities, the chirality of certain sugars and amino acids, dna similarities, etc. the evidence for a single common ancestor of all life on Earth is fairly strong; however we don't really have evidence that there never were other lifes that simply were outcompeted at their very early stages.
- vlovich123 2y agoOr the environment of Earth is hospitable to only one structure for life. Or all life we’d find anywhere has the same structure. We don’t yet know enough about the phase change transition from inorganic chemistry to biology.