| Mendelian Inheritance | Polygenic Inheritance |
| 1. F1 hybrid resembles one of the parents having dominant character | 1. F1 hybrid exhibits character intermediate between the two parents |
| 2. F2 individuals distinctly fall into two categories and exhibit distinct phenotypes resembling either of the parents | 2. F2 progeny exhibits a greater variability and a graded series of phenotype from one parent to other |
| 3. Individuals with dominant phenotype are more numerous (2/3rd) and those with recessive phenotype are less in number | 3. Individuals with average or intermediate phenotype are more numerous than either of the parental characters |