additive dominant gene的用法和样例：
- The ear diametre was inherited in a superdominant fashion with the additive gene as the dominant gene.
- Leaf length, area, and blade curvature were mainly controlled by dominant gene effect, while additive gene effect in leaf width and SLW.
- Many features of a person's face are decided by his dominant gene.
- Dominance gene effect of spike length was higher than that of additive.