問題詳情

60. The RNA-guided Cas9 nuclease and clustered regularly interspaced short palindromic repeats(CRISPR) enable efficient genome engineering in eukaryotic cells. Which of the following statementsabout this system is correct? a) originally belong to the microbial adaptive immune system, b) RNA-guided Cas9 nuclease cleaves genetic elements, c) engages DNA repair system, d) a useful tool for specificgene knockdown, e) insertion or deletion usually leads to frameshift mutations.
(A) abd
(B) abcd
(C) bde
(D) abce
(E) all

參考答案

答案：E
難度：計算中-1
書單：沒有書單，新增

用户評論

【用戶】熊熊讚

【年級】高三下

【評論內容】原本答案給(D),但後續改成(E),主因是d根據論文利用CRISPR-Cas9進行geneknockdown是可行的。a) 最初屬於微生物適應性免疫系統，b) RNA 引導的Cas9 核酸酶切割遺傳元件，c) 參與DNA 修復系統，d) 特定基因敲除的有用工具，e) 插入或刪除通常會導致移碼突變。