The maternal-effect <i>cei</i> mutation results in a highly penetrant recessive cellularization defect and a partially penetrant dominant phenotype.

1Genotype of different sibling adult females generating the clutch, mated to wild-type males. 2Percent of embryos exhibiting cellularization defects of various severities at the 1,000-cell stage, according to the classification presented in Figure 1O–R. 3Data for aurBhi1045/+ females is pooled from clutches from 11 different females.