4C5-4C6;4C7-4C8
mei-9 << bk1 << lac << pon << bk2
Flies heterozygous for the deletion do not show a Minute bristle phenotype.
Homozygous embryos have an ectopic S17 phase in the epidermis.
Df(1)bi-D3/Y embryos undergo an additional division after mitosis 16, instead of becoming postmitotic as in wild-type embryos. The extra S phase is prevented if the Df(1)bi-D3/Y embryos are carrying fzrhs.PS. Endoreduplication in the salivary glands (that normally occurs after mitosis S phase 16) fails in Df(1)bi-D3/Y embryos.
100% of hemizygous embryos have abdominal segment 4.5 to 6.0 at the posterior tip, indicating a failure of germband retraction.
Hemizygous embryos were examined with polarised light microscopy and antibody staining: muscle pattern grossly deranged.
Left limit of break 1 from polytene analysis (FBrf0043953) Right limit of break 1 from inclusion of amb (FBrf0043953) Left limit of break 2 from inclusion of pon (FBrf0105275) Right limit of break 2 from polytene analysis (FBrf0043953)