相关文档

《普通昆虫学》课程教学资源(PPT课件讲稿)第二篇 昆虫的个体发育与生活史 Insect development and life history 第一章 昆虫的生殖方式 Modes of Reproduction 第二章 卵和胚胎发育Eggs and embryonic development

一、两性生殖 Bisexual reproduction Eggs usually begin meiosis(减数分裂) only after fertilization. The meiosis of sperms have stopped before the fertilization.
团购合买资源类别:文库,文档格式:PPT,文档页数:24,文件大小:141KB
点击进入文档下载页(PPT格式)
共24页,试读已结束,阅读完整版请下载