颗粒遗传
参考答案:
决定一对相对性状的遗传因子共存在同一个体内保持其独立性,互不沾染,不相混合,在一定条件下仍可按原样分离。
Tom studies harder this term. _________, he has made great progress in his lessons.
A.Instead
B.After all
C.By the way
D.As a result
共同犯罪