3 ms·
You sound like you know more about this than I do. Are there any theories (not even with evidence) about how sex evolved? I can’t find a way two unrelated spe
by DougN7 8y ago
You sound like you know more about this than I do. Are there any theories (not even with evidence) about how sex evolved? I can’t find a way two unrelated species (that did not have a “mother and father” of some sort) came together to produce the first ever offspring with two progenitors. In otherwords some creature was conceived (using the term lossely) and born in a way vastly different from it’s parent. All the “plumbing” (organs) needed for that first combination, which would have been an evolutionary anchor up to that point, is something I can’t see my way around.
- gomijacogeo 8y agohttps://sci-hub.se/10.1126/science.324_1254 https://sci-hub.se/10.1126/science.324_1254 In short, sexual reproduction is very old (> 1 billion years ago) and first appeared in an ancestor of all eukaryotic cells and long predates multicellular life. So, all of multicellular life evolved with the haploid/diploid molecular machinery already available and different branches of life have built vastly different strategies to use it. You'd be better served IMHO to start at DNA replication and build up rather than starting at sex organs and working backward.