| 1. | non-homologous chromosomes |
| 2. | homologous chromosomes |
| 3. | extra nuclear genetic element |
| 4. | same chromosome |
| 1. | results of F3 generation of a cross. |
| 2. | observations that the offspring of a cross made between the plants having two contrasting characters shows only one character without any blending. |
| 3. | self pollination of F1 offsprings |
| 4. | cross pollination of F1 generation with recessive parent |