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. 2018 Feb 21;208(3):853–874. doi: 10.1534/genetics.117.300077

Table 3. Comparing characteristics of RNAi and CRISPR/Cas9.

Aspect RNAi CRISPR/Cas9
Delivery Bathing, feeding, injection, transfection, transduction, transgenic Injection, transfection, transduction, transgenic
Mode of action RISC-induced mRNA degradation DSB triggered InDel formation
Transcriptional regulator recruitment
Specificity 19-bp homology 20-bp homology
Tolerates up to 10 mismatches Tolerates up to 3 mismatches
Side effect prone
Efficacy Strong in C. elegans Null alleles
Strong in D. melanogaster Highly efficient in many organisms across almost all domains
Weaker in H. sapiens
Applications Pooled and arrayed, uni- and multivariate screening Pooled, uni- and multivariate screening
Single gene tests Single gene tests