Three crosses were (F-WT X M-WT; F-TG X M-WT and F-WT X M-TG) and the impact on their progeny examined. The total number of eggs (A), number of eggs per female (B), number of progeny successfully pupating per female (C), number of progeny reaching adult emergence (D), percentage of eggs from each individual female that survived to adulthood (E) and the ratio of females (F) and males (G) were assayed from three different cohorts of ten females per replicate (n=3). Asterisks (*) indicate a significant difference from the NTG controls (P<0.05), while n.s indicates no (significant) difference.