内容正文:
苏
教
版
DNA是主要的遗传物质
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1
学习目标
说明DNA是主要的遗传物质
描述染色体、DNA和基因之间的关系
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2
情景导入
龙生龙,凤生凤,老鼠的儿子会打洞。
人们通常将生物亲代与子代之间相似的现象,叫做遗传。
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3
情景导入
资料一:2009年,公安部已经建立全国打拐DNA信息库,一方面收集被拐后被解救人员的DNA信息,一方面收集因家人走失后报案的受害人家庭成员DNA信息,如果信息相符,则双方即为失散的亲人。
资料二: 在一些案发现场法医等工作人员提取犯罪嫌疑人遗留在现场的唾液、血液等液体内的DNA信息,便于寻找嫌疑人
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