Answer:
Scientists discovered the theory of evolution, cell theory and the theory of genetics
Step-by-step explanation:
Cell theory states that:
1) All organisms are made of cells.
2) All existing cells are produced by other living cells.
3) The cell is the most basic unit of life.
Theory of evolutions:
(I) Lamarckism or Theory of Inheritance of Acquired characters. (use and disuse of the body)
(II) Darwinism or Theory of Natural Selection.(natural selection)
(III) Mutation theory of Hugo De Vries.