亲代的性状能够传给子代是由于() A.亲代直接把性状传给了子代 B.亲代把DNA传给 发布时间:2018-05-23 13:45 │ 来源:www.tikuol.com 题型:单项选择题 问题: 亲代的性状能够传给子代是由于()A.亲代直接把性状传给了子代B.亲代把DNA传给了子代C.亲代把遗传物质复制一份传给了子代D.亲代把所有细胞内的结构复制一份传给了子代
题型:单项选择题 His teacher told him that since his parents were working abroad , either his grandparents or one of his uncles ______ allowed to come to the parents’ meeting .A.wasB.wereC.areD.is 查看答案
题型:单项选择题 某肺炎高热患者经抗生素治疗后,体温降至正常,关于此时患者体温调节过程的变化,下列哪项叙述是错误的()A.产热中枢抑制B.散热中枢兴奋C.调定点恢复正常水平D.皮肤血管扩张E.发热条件下的体温调节功能障碍恢复正常 查看答案