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新授课课件 | 必修2 2.1减数分裂和受精作用(第3课时) 2026

  • 2026-10-27 18:25:10
新授课课件 | 必修2 2.1减数分裂和受精作用(第3课时) 2026

必修二       课  件

2.1 减数分裂和受精作用

（第3课时）

新授课内容包括：课件+基础知识+书后习题三部分内容

说明：由于笔者能力和精力有限，难免存在有误之处，欢迎指正！

01  课件 

主要内容：

1.配子多样性的原因

2.受精作用

3.减数分裂异常分析

左右滑动查看更多

说明：图片等部分素材来源于网络

02  基础知识

点击下面链接查看

新授课 | 必修2  2.1.3 减数分裂与受精作用 第3课时  基础知识

03  书后习题

— END —

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  1. CONNECT:[ UseTime:0.000559s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000960s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000439s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000367s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000697s ]
  6. SELECT * FROM `set` [ RunTime:0.000352s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000782s ]
  8. SELECT * FROM `article` WHERE `id` = 465070 LIMIT 1 [ RunTime:0.000421s ]
  9. UPDATE `article` SET `lasttime` = 1793984270 WHERE `id` = 465070 [ RunTime:0.001625s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000317s ]
  11. SELECT * FROM `article` WHERE `id` < 465070 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000439s ]
  12. SELECT * FROM `article` WHERE `id` > 465070 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000420s ]
  13. SELECT * FROM `article` WHERE `id` < 465070 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000631s ]
  14. SELECT * FROM `article` WHERE `id` < 465070 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000524s ]
  15. SELECT * FROM `article` WHERE `id` < 465070 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000591s ]
0.116531s