Who proposed the fluid mosaic model of the plasma membrane, and in what year?

1. The fluid mosaic model was put forward by S.J. Singer and Garth L. Nicolson in 1972. 2. It replaced an earlier model because it explained both the microscopic observations and the function of the membrane. 3. Hugh Davson and James Danielli proposed the earlier sandwich model in 1935, so that pairing and that date belong to the model being replaced. 4. The 1915 date marks the identification of the membrane's chemical components, not any model. _Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 5 "Structure and Function of Plasma Membranes", section 5.1 Components and Structure_