2021-2022英语周报2021年高考英语模拟试题四答案

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8.D【解析】转录都需要RNA聚合酶催化,A错误;翻译都需要RNA参与,B错误;图甲所示基因的转录和翻译在同一空间内同时发生,为原核细胞中发生的基因表达过程,故蓝藻和细菌只有类似图甲所示的基因表达过程,但酵母菌为真核生物,主要进行如图乙所示的基因表达过程,C错误;图乙中翻译这些肽链的模板(mRNA)相同,故最终3个核糖体上合成的肽链氨基酸序列相同,D正确。

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