Figure 2.—

Summary of various hybrid crosses. (A–L) Each panel represents a particular cross, with parents above and realized progeny below. Progeny are numbered via the scheme described in materials and methods. Numbers in parentheses represent the number of embryos and adult progeny scored to produce percentages of viable and female progeny, respectively. All hybrids derived using the C. briggsae strain AF16 and the C. sp. 9 strain JU1325, except in panels E and F, where C. sp. 9 JU1422 was used.