Polytene chromosomes normal.
decreased cell number | adult stage | dominant
photoreceptor cell R7 | adult stage
Heterozygous S2 mutants show R7 photoreceptor loss.
Like S1. RK1A.
S2 has decreased cell number | dominant | adult stage phenotype, non-enhanceable by sl2
S[+]/S2 is an enhancer of abnormal size | adult stage phenotype of sl2
S2 has photoreceptor cell R7 | adult stage phenotype, non-enhanceable by sl2
S[+]/S2 is an enhancer of wing blade phenotype of sl2
S[+]/S2 is an enhancer of wing vein | ectopic phenotype of sl2
One copy of S2 enhances the reduction in wing blade area seen in homozygous sl2 males.
One copy of S2 significantly enhances the ectopic wing vein phenotype seen in sl2 homozygotes.
sl2 does not enhance the dominant R7 photoreceptor loss seen in S2 heterozygotes.
Redfield, Nov. 1925.
Arose on: In(2L)Cy.
Associated with: In(2L)t.