作者qw151300 (QQ)
看板TransBioChem
标题[生物] 生物胚胎学一问(campbell教科书上的)
时间Wed Mar 3 04:32:39 2010
The development of Drosophila is somewhat unusual in that
(A) the early mitotic division proceed without cytokinesis.
(B) metamorphosis occurs during the larval stage rather than the pupal stage,as with other insects.
(C) homeotic genes are mutated.
(D) cell migration within the embryo does not occur.
(E) the initial cell divisions have lenghty G1 phases.
(看不懂,他是要问什麽?)
中文版的问题翻译是:果蝇的发育在下列何项多少有些不寻常?
答案是A ,麻烦请解释一下
另外请问
(C) (D) (E) 选项为什麽不能选呢?
感谢各位的解惑
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 220.130.131.217
1F:推 water0bearer:A)果蝇最重要的就是受精卵刚开12还13次细胞分裂没有 03/03 17:11
2F:→ water0bearer:发生cytokinesis(分裂)!!! 03/03 17:12
3F:推 biup2:A 03/03 21:20
4F:→ qw151300:所以说胞质分裂在此是特有的吧 谢谢各位 03/03 22:33
5F:→ qw151300:打错 是没有细胞分裂 03/03 22:36