Homozygous viable. Nonsense and splicing alleles identified by amplicon sequencing. The gk5265 mutation is G->A, flanking sequences GAAATGACCGCCGAACTGAAGAAGTTAAAG and TGATATATACAACAATGAACAATCACTAAT. The gk5266 mutation is C->T, flanking sequences TCAGGCTCATGGCGAGCTCTTCCAGTGGCA and AAGGCGGTTCCTCACATATTCGTATCTGGC.