The discussion centers around various examples of artificial and natural selection in evolution. Participants share notable cases such as domesticated dogs, super-cattle, and modern corn, highlighting how human intervention has shaped these species. The term "samurai crabs" is debated, with clarification that while they are a natural species, human selection influences their survival. The conversation also touches on the effects of selective breeding in poultry, leading to exaggerated traits like larger breasts. Additionally, there are mentions of genetically modified organisms, including glow-in-the-dark corn and cats, as well as concerns about human-driven evolution exemplified by antibiotic-resistant bacteria like the NDM-1 gene. The discussion includes fascinating evolutionary stories, such as the development of the mammalian inner ear from jaw bones and the endosymbiotic origins of mitochondria and plastids, alongside the evolution of cetaceans like whales and dolphins. Overall, the thread emphasizes the impact of both natural processes and human actions on evolutionary trajectories.
