Frequency and size of external structures in the terminalia of D. melanogaster flies expressing the Anastrepha DsxM male protein.

Symbols: T8, 8th tergite; VP, vaginal plates; GA, genital arch; LP, lateral plates; CL, clasper; PA, penis apparatus comprising the penis proper and hypandrium; AP, anal plates. The number in parenthesis following the genotype indicates the number of analysed flies. Frequency refers to the presence of the corresponding structure. The size was calculated by counting the number bristles in the different structures. Crosses in Materials and Methods.