TABLE 2

Survival of spn-A homozygotes and heterozygotes after exposure to ionizing radiation during larval development

No. of adults (relative survival)b
Genotypea0 rad1000 rad2000 rad3000 rad
Cross 1: spn-A093/TM3 ♀♀ × +/+ ♂♂
+/TM3142462910271108
spn-A/+1360 (1.0)695 (1.16)1042 (1.06)1035 (0.98)
Cross 2: spn-A093/TM3 ♀♀ × spn-A057/+ ♂♂
+/TM3 453568 599 795
spn-A/spn-A 544 (1.0) 71 (0.10)   0 (0.0)   0 (0.0)
  • a Progeny from two different genotypic classes were counted for each cross.

  • b The number in parentheses is the relative survival of the mutant genotype, relative to the control genotype. The ratio between these classes in unirradiated controls is taken as a relative survival of 1.0.