Heterozygous females are wild type at 25oC and display a weak br wing phenotype at 18oC. Heterozygous females exhibit the 'rbp' bristle phenotype at 18oC and 25oC. Heterozygotes with br24 at 25oC are viable and display an 'rbp' bristle phenotype, most flies also have abnormal legs, none show the br wing phenotype. At 18oC these heterozygotes are lethal.
Schalet.