Table 2.

Genetic characterization of varicose alleles

Allele type% Viability (n)*
Allele38EFa23953b327F033Df(2L)TW2
38EFa2 Weak 74% 638 w 83% 763 w 0% 6800% 8600% 880
56% 658 w+ 98% 944 w+
3953b Intermediate 73% 798 w+ 0% 688 w0% 6740% 6530% 661
R979 Strong 6% 1256 w 0% 672 w0% 6770% 6320% 623
8% 912 w+ 0% 683 w+
HM2043 Strong 29% 700 w 0% 678 w0% 6330% 7760% 636
16% 720 w+ 0% 670 w+
R2376 Strong 18% 602 w 0% 604 w0% 6750% 7300% 904
0% 604 w+0% 811 w+
327 Null§0% 737 w+0% 609 w+0% >9990% 6260% 607
R3 Null§0% 784 w0% 669 w0% 6220% 6430% 628
0% 617 w+0% 796 w+
F033 Null§2%§ 721 w+0% 697 w+0% 6260% >9990% 626
Df(2L)TW2 Deficiency§0% 824 w+0% 708 w+0% 6070% 6260% >999
  • * % Viability=[# straight wing adults÷(# curly wing adults+# straight wing adults)÷0.33]×100; n, number of progeny counted. Unless otherwise specified, alleles were balanced with CyO dfd-YFP w (Le et al., 2006); bold text, viability >5%; remainder, viability<5%.

  • Crosses were set up using females of the column genotype and males of the row genotype.

  • The genotype of the female balancer chromosome is indicated. w, CyO dfd-YFP w; w+, CyO dfd-YFP w+.

  • § variF033 is considered a null allele despite having a very low percentage of viable progeny when crossed to vari38EFa2 because vari327 and variR3, which might otherwise be considered null because of their complete lethality in trans to vari38EFa2, occasionally cause somewhat more severe phenotypes than Df(2L)TW2 and thus may be slightly antimorphic. In addition, Df(2L)TW2 is unhealthy as a heterozygote in trans to WT, which is likely to mask any minimal viability of the vari38EFa2/null phenotype.