What is the most accepted hypothesis on the origin of life on earth? How does it compare to the other main hypothesis?
Answers
Answer:
The Earth formed roughly 4.54.54, point, 5 billion years ago, and life probably began between 3.53.53, point, 5 and 3.93.93, point, 9 billion years ago.
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.
The Miller-Urey experiment provided the first evidence that organic molecules needed for life could be formed from inorganic components.
Some scientists support the RNA world hypothesis, which suggests that the first life was self-replicating RNA. Others favor the metabolism-first hypothesis, placing metabolic networks before DNA or RNA.
Simple organic compounds might have come to early Earth on meteorites.