Homozygotes and hemizygotes do not survive at 29^oC. The number and length of wing vein breaks remains roughly equal from 18^oC to 25^oC in homozygous flies.

Lethal in combination with Df(1)N-8 at 29^oC. Homozygous lethal at 29^oC (44% survive at 18^oC). Wings show an abruptex phenotype in 100% of heterozygotes at both 18^oC and 29^oC. Homozygotes express the abruptex phenotype more extremely than heterozygotes at 18^oC. 10% of N^Ax-59d/N^Ax-tsl flies survive and have an abruptex phenotype at 29^oC. 50% of N^l1N-2/N^Ax-tsl flies survive at 29^oC. Phenotypes seen include small eyes and head, an abruptex phenotype and fused legs. 29% of N^l1N-3/N^Ax-tsl flies survive at 29^oC. Phenotypes seen include small eyes and head, an abruptex phenotype and stubby legs. 27% of N^l1N-69e/N^Ax-tsl flies survive at 29^oC. Phenotypes seen include small eyes which are sometimes rough and an abruptex phenotype. 2% of N^Ax-tsl/N^l1N-ts1 flies survive at 29^oC. Phenotypes seen include stubby legs and an abruptex phenotype. 40% of N^l1N-ts2/N^Ax-tsl flies survive at 29^oC and have an abruptex phenotype. Lethal in combination with N^55e11, N^264-39, N^264-40, N^60g11, N^69d5 or N^69e2 at 29^oC. N^l1N-ts1 and N^Ax-tsl show negative complementation at 18^oC; N^l1N-ts1/N^Ax-tsl flies do not survive as well as either homozygote.

Ax phenotype 100% penetrant in heterozygotes at 18^oC and 29^oC; homozygous lethal at 29^oC and semi-lethal at 18^oC. Surviving homozygotes have a stronger Ax expression than in heterozygotes. Lethal with N mutants at 29^oC and semi-lethal with N^Ax-59d. Ax in phenotype and complementary with recessive visibles at Notch at 18^oC and noncomplementary at 29^oC. On the genetic map of the Notch locus to the right of spl.