A sex-ratio Meiotic Drive System in Drosophila simulans. II: An X-linked Distorter
Figure 1
One of the parental X chromosomes (y wam v2 f 66) has functional distorter(s), whereas the other (w) does not. Single-male matings were set up for all X chromosome recombinants in G3. All recombinants, represented by X in G4 and G5, were tested for sex-ratio in an isogenic background nt; nmy in G5 (I) as well as in a control background of nt; +/nmy (II). Two classes of recombinants (F and H) with the same visible phenotype were distinguished by progeny from additional crosses with y wam v2 f 66 females in G5. However, class B (+ w ? +) may be a mixture of + w + + and + w v2 +, which were not distinguished.