additive genetic component的用法和样例：
- Only the additive genetic variance is transmissible by seed.
- These findings suggest that there is a genetic component to alcoholism.
- The additive genetic variance of the same character, estimated from the covariance of half sibs, was 0. 9602.
- The results indicated that both additive effects of QTL and epistasis effects between QTLs were important genetic components.