题型:名词解释 The _____ on his face was kind of strange, when I told him the news.[ ]A. appearance B. looking C. expression D. description 查看答案
题型:名词解释 下图是基因型为AaBb(两对基因独立遗传)的某动物组织切片显微图像,下列说法正确的是[ ]A.细胞分裂先后经过①→②→③过程B.细胞②分裂结束后形成极体和次级卵母细胞C.细胞①中有4个四分体,8条染色单体D.细胞③分裂结束后可能产生基因组成为AB的两个子细胞 查看答案