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WorldPosted at: Apr 4 2025 8:00PM


Australian study uses machine learning to reveal early oxygen use in bacteria

Sydney, Apr 4 (UNI) A research team constructed a detailed evolutionary timeline of bacteria, revealing that some microbes used oxygen long before photosynthesis evolved, according to the University of Queensland (UQ) on Friday.
The study focused on how microorganisms responded to the Great Oxygenation Event (GOE) 2.33 billion years ago, a pivotal shift that transformed Earth's atmosphere to one that allows humans to breathe, said a UQ statement.
Dating bacterial evolution had been challenging due to incomplete fossil evidence, said Professor Phil Hugenholtz from UQ's School of Chemistry and Molecular Biosciences.
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