Deletion encompassing SMC1.
lethal (with Df(3R)Exel6197)
SMC1exc46/Df(3R)Exel6197 transheterozygotes are lethal.
SMC1exc46 homozygous embryos do not show an obvious musculature phenotype, as compared to controls.
Chromosomal squashes of SMC1exc46 mutants reveal precocious sister chromatid separation.
SMC1exc46 is rescued by SMC1Chi.EGFP
SMC1exc46 homozygotes expressing SMC1Chi.T:Avic\GFP-EGFP survive to adulthood.