Asked by Parvathi
How did life begin?
Answers
Answered by
PsyDAG
First, the earliest steps toward life required neither DNA nor RNA, and may not even have involved spatial compartments like cells; the earliest reactions could have occurred in the voids of porous rock, perhaps filled with organic gels deposited as suggested in the Oparin-Haldane model.
The Oparin-Haldane hypothesis suggests that life arose gradually from inorganic molecules, with “building blocks” like amino acids forming first and then combining to make complex polymers. Some scientists support the RNA world hypothesis, which suggests that the first life was self-replicating RNA.
The Oparin-Haldane hypothesis suggests that life arose gradually from inorganic molecules, with “building blocks” like amino acids forming first and then combining to make complex polymers. Some scientists support the RNA world hypothesis, which suggests that the first life was self-replicating RNA.
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