nucleus & terminal tracheal cell | somatic clone
Homozygous clones induced at the late blastoderm/early gastrulation stage and then examined in the third larval instar tracheal system show defects compared to wild-type clones; the nucleus of the dorsal terminal cell is wrongly positioned in clonal cells and rather than being at the center of the cell from which all branches arise, it appears to have moved to one of the branches.