Sequencing revealed no changes in the sli exons.
2.0% of expected mutant embryos hatch as first instar larvae. The latest observed stage of mutants is adult. Nerve cord length is 85% of embryo length. Midline guidance failure of repellence phenotype, evidenced by midline crossing, is mild.
sli2990 has larval ventral nerve cord phenotype, enhanceable by robo[+]/robo11