Sentences with phrase «pole cell formation»

psq mutations include lethal alleles (0482; Horowitz and Berg 1996), semilethal alleles that cause rudimentary ovaries and a defect in R3 / R4 photoreceptor specification (F112, E34, E39, D91; Weber et al. 1995), and viable female - sterile alleles causing defects in abdominal and dorsoventral patterning and in pole cell formation (fs1, I - 30, HK38, 2403, 2905, 6372, P1, P4, and X1 - 30; Schupbach and Wieschaus 1991; Siegel et al. 1993; Horowitz and Berg 1996).