Figure 5

Six4 is required for migration but not specification of msSGPs. Stage 13 male wild type (A) and Six4¹³¹homozygous (B) mutant embryos. The msSGPs (arrows) fail to migrate in the mutant but are maintained as a cluster and express the markers Sox100B and Eya. In females both wild type (C) and Six4¹³¹mutant (D) embryos have cells posterior to the gonads that co-express Eya and an apoptosis marker (arrows), likely to be msSGPs.