The targeted loci were amplified from extracted genomic DNA by PCR using Herculase II polymerase (Agilent). PCR amplicons were sequenced using primers ~200 bp from the expected cut site. To measure editing frequencies, the sequencing traces were analyzed using tracking of indels by decomposition (TIDE) (38 (link)). Primers, listed in SI Appendix, Table S5, were synthesized by Integrated DNA Technologies.