2021新教材人教版 高中生物PPT课件 第4单元第2讲　减数分裂和受精作用.ppt

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1、考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三第四单元第四单元 细胞的生命历程细胞的生命历程第第2讲减数分裂和受精作用讲减数分裂和受精作用考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考考点点一一减数分裂和受精作用减数分裂和受精作用考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三有性生殖有性生殖原始生殖细胞原始生殖细胞一次一次两次两次一半一半考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三DNA蛋白质蛋白质考点一考点一返返首

2、首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三睾丸睾丸卵巢卵巢均等分裂均等分裂不均等分裂不均等分裂变形变形考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三4413考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三卵细胞卵细胞精子精子受精卵受精卵细胞核细胞核细胞核细胞核染色体染色体染色体染色体精子精子(父方父方)卵细胞卵细胞(母方

3、母方)考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三减数分裂减数分裂受精作用受精作用每种生物前后代体细胞中染色体数目的恒定每种生物前后代体细胞中染色体数目的恒定生物的遗传和变异生物的遗传和变异考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三 考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三 考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三 考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返

4、首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后

5、限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点

6、三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考考点点二二减数分裂和有丝分裂的比较减数分裂和有丝分裂的比较考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三精精(卵卵)原原 考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三一次一次四

7、分体四分体交交叉互换叉互换2413相同相同考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三一一纺锤体纺锤体核仁核仁分裂分裂分开分开考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三 考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三 考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三 考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考

8、点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考

9、点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时

10、集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考考点点三三观察蝗虫精母细胞减数分裂固定观察蝗虫精母细胞减数分裂固定装片装片(

11、(实验实验) )考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三精母精母形态形态数目数目考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三多于多于次级卵母次级卵母第二次第二次考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三次级精母次级精母初级精母初级精母中期中期中中后后考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时

12、集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考

13、点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首

14、页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三课课后后限限时时集集训训点击右图进入点击右图进入考点一考点一返返首首页页考点二考点二课后限时集训课后限时集训考点三考点三Thank you for watching !