Scer\FRT-mediated recombination between the two progenitor insertions has resulted in the deletion of the genomic sequence between them.
Df(1)frqdel3/Df(1)frqdel1 third instar larval mutants do not show any significant difference in resting Ca[2+] level compared to controls.
Df(1)frqdel3/Df(1)frqdel1 third instar larval mutants exhibit more severe defects in quantal release in low-Ca[2+] saline (65% reduction) than in high-Ca[2+] saline (35% reduction).
Nerve-terminals of Df(1)frqdel3/Df(1)frqdel1 third instar larvae show significantly more 1s boutons than in wild-type. The number of 1s and 1b boutons is not different in Df(1)frqdel3 mutants compared to wild-type. Nerve-evoked compound EJPs are significantly smaller than for controls. The frequency and amplitude of spontaneous release are not affected in Df(1)frqdel3/Df(1)frqdel1 lines.
Peak amplitudes of Ca[2+] signals are significnatly reduced by 15% on average in Df(1)frqdel3/Df(1)frqdel1 third instar larval mutants compared to controls.
Nerve-terminals of Df(1)frqdel3 third instar larvae show significantly more 1s boutons than in wild-type. The number of 1s and 1b boutons is not different in Df(1)frqdel3 mutants compared to wild-type. Nerve-evoked compound EJPs are significantly smaller than for controls. The frequency and amplitude of spontaneous release are not affected in Df(1)frqdel3 mutants. The number of quanta released by single 1b and 1s boutons is significantly reduced in Df(1)frqdel3 mutants in comparison with controls. No differences in amplitude or time course of spontaneously occurring quantal events are found.
Df(1)frqdel1 third instar larval mutants exhibit more severe defects in quantal release in low-Ca[2+] saline (65% reduction) than in high-Ca[2+] saline (35% reduction).
Df(1)frqdel1 third instar larval mutants do not show any significant difference in resting Ca[2+] level compared to controls.
Peak amplitudes of Ca[2+] signals are significnatly reduced by 15% on average in Df(1)frqdel3 third instar larval mutants compared to controls.