試題詳解

30.CRISPR is a famous genome-editing tool. Which of following statement is (are) TRUE:
(A) CRISPR is discovered as a bacterial immune system
(B) There are multiple types of CRISPR
(C) Two major components that introduced into mammalian cell for genome editing are cas-9 protein and guide DNA
(D) Creating gene deletion using CRISPR rely on the mistake of DNA repairing system in the host cell
(E) The recognition sequence for the cas-9 crispr system is the three nucleotide PAM sequence