[47F13-47F13];[48C5-48C5];
47F13;48C5
The mesoderm is not aligned along the midline in homozygous embryos after invagination and ectoderm-mesoderm adhesion is severely disturbed. Subsequently, the mesoderm cells fail to spread dorsally.
Cells at the dorsal edge of the mesoderm form only short filopodial protrusions during dorsolateral migration in homozygous embryos, in contrast to wild-type cells which form thin, long protrusions.
The number of cardiac muscle precursors is strongly reduced in homozygous embryos at stage 13/14 and at stage 16.
Mesoderm cells do not spread out in homozygous embryos at the time when mesoderm migration normally occurs but remain associated with each other. At later stages, there is a failure to produce dorsal mesoderm derivatives.
Limits of break 1 computationally determined from location of progenitor P insertion on genome sequence between P{lacW}Tapδk17005&P{lacW}k05103 and P{lacW}l(2)k13403k13403&P{lacW}Egmk14708 Limits of break 2 computationally determined from location of progenitor P insertion on genome sequence between P{lacW}Ef1α48Dk17014 and P{lacW}l(2)k06612k06612