• This refers to a hypothesis regarding the origin of life on earth. It states that life on the planet originated around 4 billion years ago through the combination of abiogenic material on the earth’s surface and some form of external energy.
• This natural reaction led to the birth of the most primitive cells that are the building blocks of life.
• It is believed that, over time, these primitive cells gradually evolved into a huge variety of complex living organisms.
• The hypothesis was first proposed by Soviet biologist Alexander Oparin in 1924 and later independently by English geneticist John Haldane in 1929.

Source:TH