| Phenotype | Genotype |
| 1. Phenotype refers to the outward appearance of an individual such as shape, colour, sex, etc | 1. Genotype refers to the genetic composition of an individual. |
| 2. Phenotype can be observed directly in an individual. | 2. Genotype cannot be seen, but can be found out by modern techniques like DNA fingerprinting. |
| 3. Individuals resembling each other may or may not have the same genotype. | 3. Individuals possessing the same genotype usually have the same phenotypic expression |
| 4. The phenotypic ratio obtained in the F2 generation of a monohybrid cross is 3 : 1. | 4. The genotypic ratio obtained in the F2 generation of a monohybrid cross is 1 : 2 : 1. |
