2. Characteristics of F1 and F2 progeny produced by reciprocal crosses are identical. This observation clearly demonstrates that the contributions of male and female parents to the characteristics of the progeny are equal.
3. F1 progeny from a single cross are uniform in their characteristics. That is, all the plants in F1 from a cross are similar to each other. But F2 generation shows a large variation for different characteristics.
4. In F2 generation, some plants have characteristics similar to one parent, while some others are similar to the other parent in their appearance. The appearance of parental forms in F2 was called reversion. But a majority of the plants were intermediate in appearance between the two parents.
5. Some plants in F2 have entirely new characteristic forms.
