某生物体细胞内含有4对同源染色体,其中a、b、c、d来自父方,A、B、C、D来自于母方,经过减数分裂产生配子中,同时含有四个母方染色体的可能性( )A. 1/2 B. 1/4 C. 1/8 D. 1/16 答案:【答案】D【解析】在减数分裂过程中,同源染色体分离,非同源染色体发生自由组合,因此减数分裂过程中,每对染色体分离,即产生的配子中含有每条母方染色体的概率均为1/2,所以同时含有四个母方染色体的可能性(1/2)4=1/16。After the new technique was applied to production, the factory has produced ______ over the same period last year. A. many cars twice as B. twice as many as cars C. twice cars as many as D. twice as many cars as