下列有关无性生殖和有性生殖的叙述                     

下列有关无性生殖和有性生殖的叙述                      

①无性生殖是不产生生殖细胞、由母体直接产生新个体的生殖方式

②无性生殖产生的新个体所含有的遗传物质与母体相同,因而新个体是不可能产生变异的

③进行有性生殖的个体才能进行减数分裂,能进行无性生殖的生物不可能进行减数分裂

④嫁接能够保持母本的优良性状,但是收获果实的年限比种子繁殖长

A.都正确          B.有两项正确         

C.有一项正确      D.都不正确

答案

D


解析:

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