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天一大联考三晋名校联盟2023-2024高三届级阶段性测试(期中)生物答案

[db:作者] 2023-11-25知识百科
天一大联考·三晋名校联盟2023-2024学年高三年级阶段性测试(期中)生物答案,目前我们已经整理了天一大联考·三晋名校联盟2023-2024学年高三年级阶段性测试(期中)生

天一大联考·三晋名校联盟2023-2024学年高三年级阶段性测试(期中)生物答案,目前我们已经整理了天一大联考·三晋名校联盟2023-2024学年高三年级阶段性测试(期中)生物答案的各科答案和试卷,更多高中试卷答案请关注本网站或关注微信公众号:趣找答案 本次考试的各科试题和答案汇总在天一大联考·三晋名校联盟2023-2024学年高三年级阶段性测试(期中)各科试题及答案.

天一大联考三晋名校联盟2023-2024高三届级阶段性测试(期中)生物答案

7.答案D命题透析本题以细胞决定为情境,考查细胞分化的相关知识,旨在考查考生获取信息的能力和综合运用能力,以及生命观念、科学思维的核心素养。思路点拨依据题干细胞决定的含义可知,细胞决定先于细胞分化发生,A项正确;细胞决定与基因选择性表达有关,B项正确;由题意可知,关闭基因Brm,细胞不能合成蛋白Brahma,干细胞不能分化为心脏细胞前体细胞而分化为脑细胞前体细胞,说明Brahma可激活心脏细胞所需的基因,关闭脑细胞所需的基因,C项正确;关闭基因Bm,细胞分化发生改变,进而证明细胞决定的存在,D项错误。

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