Abstract
“THE biological gap which separates bacteria and blue-green algae from all other cellular organisms represents one of the largest evolutionary discontinuities in the present day living world”1. The origin of eukaryotic cells from simpler precursors2 is an area of study where speculation is easier than experimental investigation. It seems unlikely that definitive fossil evidence for such early events will ever be obtainable, but molecular methods may be able to give some insight into evolutionary connections between eukaryotes and prokaryotes.
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AMBLER, R., BARTSCH, R. Amino acid sequence similarity between cytochrome f from a blue-green bacterium and algal chloroplasts. Nature 253, 285–288 (1975). https://doi.org/10.1038/253285a0
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DOI: https://doi.org/10.1038/253285a0
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