Shifting ct83h/ct2s; su(Hw)e2/su(Hw)2 embryos from 18oC to 29oC and vice versa demonstrates that the temperature sensitive period of su(Hw) gene product activity to block the ct wing enhancer is during pupariation, expression of ct is required just prior to pupariation and until 16-20h postpuariation.
gypsy insertion into ct locus on an FM6 balancer chromosome.