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Scientists stunned after virus jumps between humans and animals: 'It was a very unusual situation'
A study published in the journal Nature Communications in December looked at an instance of the COVID-19 virus spreading from humans to big cats. According to Westword, after humans initially ...
Professor Tim Coulson describes evolution as a gradual process that alters living organisms over generations. The mechanism is ordinary but powerful. Small genetic mutations appear in DNA. Most do ...
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