amon mutants heterozygous to the Df(3R)Tl-X deficiency chromosome, recognizable by the absence of the GFP marker, were scored for survival at the following times: 36 hr ae1, 60 hr ae1, 96 hr ae1, and 120 hr ae1. In wild-type animals, these times correlate to the approximate midpoints of first, second, and third larval instars and to pupariation, respectively. Percentage of survival is expressed as the percentage of non-GFP animals expected (50 animals) from a collection of 200 eggs (see materials and methods). The percentage of survival given for S557L represents the average of values determined for amon^S557L1 and amon^S557L2.