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近两年的高考题中非选择题部分,对以种子为背景材料的知识考查得较多。由于在初中有所涉及,在高中教材并没有涉及相关知识。造成知识点存在盲区。针对此问题,笔者将此知识点整理后在高三教学中做一适当补充,以填补这一盲区。一种子的形成过程在此过程中细胞的分裂方式都是有丝分裂。温馨提示:在涉及遗传学基本规律计算题时,可补充此知识点。让学生知道种子中种皮和母本一样,胚中父本母本各一半,胚乳中父本1/3,母本2/3,在每一个种子中,都包
In the past two years, the non-multiple choice questions in the college entrance examination questions are more probed into the knowledge of seed-based materials. Due to the involvement of junior high school, teaching materials in high school did not involve relevant knowledge. Resulting in knowledge of the existence of blind spots. In response to this problem, the author points this knowledge finishing high school teaching to make an appropriate supplement to fill this blind spot. A seed formation process in the process of cell division are mitotic. Tips: Genetics involved in the basic law of computing questions, you can add this knowledge point. Let the students know that the seeds in the seed coat and the same mother, embryos in the mother of the mother half of the endosperm in the paternal 1/3, the mother of 2/3, in each seed, all packages