Comments by "Kate S" (@KateeAngel) on "Evolutionary Tree of Life | Episode 1 - Early Life, Invertebrates u0026 Fish" video.

  1. You misspelled "by empirical evidence"
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  2. You are so mistaken. The evolution of eukarya from archaea is basically confirmed at this point. Three domain system is argued nowadays only as a classification, which can be used for practical purposes while cladistically there are clearly 2 domains
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  3. Yeah, there are biologists which propose that viruses evolved capsids and cells evolved ribosomes, and that is their true difference, before that they could have a common ancestor. And maybe first viruses could live by themselves in very specific niches, but were outcompeted by cells, so parasitic niche was just the only left for them. Also, I like to say plastids which retain DNA, membrane and their own ribosomes are still cyanobacteria, despite also being organelles. They haven't fully lost their identity. There are many endosymbiotic bacteria which also can't live without a host and also influence its life cycle and metabolism, yet they are considered bacteria, not organelles, while plastids are denied that, just because of traditional views
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  4. ​​ @omargamal916  it is not "simply a bacterial cell", it is not a bacterial cell at all. It is "similar" to bacterial cell,and still only if you don't look much into any biochemistry. When you start looking into biochemistry, it is different from bacterial cell in multiple things
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  5. Well the whole tree wouldn't fit in one chart
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  6. But there are many bigger mistakes than that the one with bees and wasps.. those are all simplifications necessary simply because the whole tree should fit into one chart and important for humans groups are shown
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  7. ​ @alexreid1173  I am not even sure about where "most biologists don't consider viruses to be alive" claim comes from.
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