题干

下列不属于减数分裂和受精作用的意义是

A:有利于生物的生存和进化

B:维持生物前后代体细胞中染色体数目的恒定

C:能够基本保持亲本的一切遗传性状

D:对于生物的遗传和变异具有十分重要的意义

上一题 下一题 0.0难度 选择题 更新时间:2018-01-17 11:06:05

答案(点此获取答案解析)

C

同类题5

阅读下面的文字,完成下列小题。

                                                                                    清晨我漫步在山坡谷地,

                                                                                    晨光宣泄着永恒的秘密,

                                                                                    山涧里流倘出一条小溪,

                                                                                    她在歌、在唤、在吐露心曲:


                                                                                    生活并非安逸,

                                                                                    它是思念和希冀。

                                                                                    死亡并非哀歌,

                                                                                    它是失望与憔悴。

                                                                                    智者不在言词,

                                                                                    其秘密在言词背后藏nì。

                                                                                    伟人不在高位,

                                                                                    不屑权位者才配享荣誉。

                                                                                   (纪伯伦《小溪,你说什么》节选)