In 1924 Alexander oparin put forward an explanation about the life that in the early earth would be not same as today so pre-existing organism will consume any spontaneous occur organism. Then the succession of life will become impossible so he explains that everything happened inside a ‘primordial soup’ of organic molecules have been created in the oxygenless environment through the action of sunlight and even the thunderstorm these organic molecules would combine in even more complex form until they form coacervate droplets. These droplets would grow by fusion with other droplets and formed amino acid and further differentiate to form organism and they reproduce through fission and produce daughter cell and the first primitive respiration takes place through their body which further promote the ‘cell integrity’. And further save them from getting extinct. This was considered as the great hypothetical discovery in the study of abiogenesis(the origin of species).
So haldane the great scientist tried to expand oparin theory and came to these conclusions-
1)The early earth has chemically reducing atmosphere (oxygenless atmosphere).
2) The atmosphere exposed to energy in various form and produce simple organic compounds (‘monomers’) and they even combine to form amino acid later with the very complex process and they held together by the peptide bond between themselves).
So the whole conclusion is that the ultimate life arises from a primordial soup.
Now the problem is that it is just an hypothesis we need some proof .
So now the question remains same what is life??? :(
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