19. What does "knockout" refer to in genetic research?
(A) Removing a gene to study its function
(B) Introducing a new gene into an organism
(C) Altering the gene sequence with CRISPR
(D) Silencing RNA expression
(E) Amplifying gene expression
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統計: A(1), B(0), C(0), D(2), E(0) #3422985
統計: A(1), B(0), C(0), D(2), E(0) #3422985