‘Modern theory of origin of life’ was propounded by:

Modern Theory of Origin of Life or Theory of Origin of Life was propounded by Oparin and Haldane.

According to this theory life originated on early earth through physico-chemical processes of atom combined to form molecules, later molecules in turns reacting to form organic and inorganic compounds. Organic compounds combines to form all types of macromolecules which later organised to form the first cell or living system.