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Fig. 4. egl, mio double mutants arrest prior to pachytene. mio is
required at an early stage of meiosis. (A-C) Germaria double labeled with
C(3)G (red) and
Orb (green). Magnified C(3)G staining is shown
in upper right panel. (A) mio mutant: two pro-oocytes have thick
thread-like C(3)G pattern, indicating that, like wild type, the mio
pro-oocytes progress to pachytene. (B) egl null mutant
(egl1): all 16 cells form the less extended SC
that is representative of late zygotene or early pachytene. (C)
mio2, egl1 double
mutants: all 16 cells show the dot pattern of C(3)G that is normally observed
in early zygotene.