A:次级精母细胞中的DNA分子正好和正常体细胞的DNA分子数目相等
B:减数第二次分裂后期,细胞中染色体数目只有正常体细胞数目的一半
C:初级精母细胞中染色单体的数目正好和细胞中DNA分子数目相等
D:任何一种哺乳动物的细胞中染色体数目和着丝点数目都相同
根据句意及首字母或汉语提示,完成下列单词。 (1)The e____ is the biggest animal on land.(2)The old man p____ trees in spring every year.(3)My hobby is c____ stamps(邮票).(4)It's d____ to play football in the street.(5)Will you i____your teachers to your birthday party?