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"Discovery boosts theory that life on Earth arose from" Topic


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Tango01 Supporting Member of TMP11 Jan 2021 2:46 p.m. PST

… RNA-DNA mix

"In a study published in the chemistry journal Angewandte Chemie, they demonstrated that a simple compound called diamidophosphate (DAP), which was plausibly present on Earth before life arose, could have chemically knitted together tiny DNA building blocks called deoxynucleosides into strands of primordial DNA.

The finding is the latest in a series of discoveries, over the past several years, pointing to the possibility that DNA and its close chemical cousin RNA arose together as products of similar chemical reactions, and that the first self-replicating molecules -- the first life forms on Earth -- were mixes of the two.

The discovery may also lead to new practical applications in chemistry and biology, but its main significance is that it addresses the age-old question of how life on Earth first arose. In particular, it paves the way for more extensive studies of how self-replicating DNA-RNA mixes could have evolved and spread on the primordial Earth and ultimately seeded the more mature biology of modern organisms…."
Full article here
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Amicalement
Armand

Personal logo Editor in Chief Bill The Editor of TMP Fezian11 Jan 2021 4:47 p.m. PST

Courtesy of Science Daily

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