Solution:
Lamarckism | Neo-Lamarckism |
1.It is the original theory proposed by Lamarck. | 1.Lamarckism based on modern knowledge |
2.It talks about some internal forces, changes in environmental factors and use and disuse of organs. | 2.It says about changes in environmental factors but not due to use and disuse of organs and internal forces. |
3.Only somatic cells are affected so acquired characters are developed during individuals own life span. | 3.Somatic cells and germ cells are affected. |
4.Acquired characters are inheritable. | 4.Only germinal variations are inheritable or where germ cells are formed from somatic cells. |