CRISPR/Cas9 endonuclease-mediated homology-directed repair (HDR) genome editing is used to insert an mCherry reporter in-frame before the termination codon. A combination of two sgRNAs (sgRNA1 ATTCTTATAGAGGACGCACT and sgRNA2 AAGTGCGTCCTCTATAAGAA or sgRNA1 and sgRNA3 AACATTGTGGTGGCTGATAT) is used to traget the junction between exon 4 and the 3' untranslated region (UTR). (J:302430)