基因型为AaBB和aaBb的两个亲本交配,下列叙述错误的是()
A.亲本各产生两种配子
B.后代有4种基因型
C.后代有4种表现型
D.后代基因型的比为1﹕1﹕1﹕1
参考答案:C
At the evening party the host said ______ was able to solve the riddle could get a nice present as a reward.
A.whoever
B.who
C.no matter who
D.whomever
轻型车辆是指由随乘人员能随时撤出线路外的轻型轨道车及其他非机动轻型车辆。