A fresh examination of meteorites that landed in Australia, the United States, and Canada is bolstering the notion that early in Earth’s history such objects may have delivered chemical ingredients vital for the advent of life. Nucleobases are nitrogen-containing compounds crucial in forming DNA’s characteristic double-helix structure. Unlike in previous work, the methods used this time were more sensitive and did not use strong acids or hot liquid to extract the five components, known as nucleobases, Oba said. The new study results were published in the journal Nature Communications, with new methods detailed by study leader, Hokkaido University Institute of Low Temperature Science astrochemist Yasuhiro Oba. Researchers say they have now identified the final two after fine-tuning the way they analysed the meteorites. Scientists were previously aware of the molecule that carries genetic instructions in living organisms, and RNA, the molecule crucial for controlling the actions of genes. Watch the latest News on Channel 7 or stream for free on 7plus >
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