某校学生在学校调查了人的拇指能否�背侧弯曲的遗传情况他们以年级为单位对各班级的统计进行了汇总和整理见表亲代子代 类型类型第一组第二组第 Template




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tomski某校学生在学校调查了人的拇指能否�背侧弯曲的遗传情况他们以年级为单位对各班级的统计进行了汇总和整理见表亲代子代 类型类型第一组第二组第 coloring