| abstract |
A production method for a cell in which only one allele is genome-edited includes: a step of introducing, into a cell, (A) at least one selected from the group consisting of (a1) a guide RNA in which one or more nucleotide residues are added to a 5'-end of a spacer sequence, (a2) a guide RNA containing a spacer sequence having single-base or multiple-base mismatches with respect to a target sequence, and (a3) an expression vector that can cause the guide RNA of (a1) or (a2) to be expressed, and (B) at least one selected from the group consisting of a Cas protein and an expression vector that can cause the Cas protein to be expressed. |