Fig. 4.

Frequency changes of heterozygous genotypes through developmental stages in (A) R females and (B) W females. The values are scaled by setting the frequency in eggs equal to one, and error bars (1 SE) are calculated by bootstrapping. The different heterozygotes are D/I (one diagnostic and one introgressed allele), I/− (one introgressed allele and any other allele that is not diagnostic), and D/− (one diagnostic allele and any other allele that is neither diagnostic nor introgressed). The increase of heterozygotes with introgressed alleles indicates that hybrid females are favored in group R.