developmental process sexual differentiation 2007-11-30T10:57:00Z IDOMAL:0002365 IDOMAL:0002365 Sexual dimorphism in adult mosquitoes is expressed in a number of ways: (i) in the structure of the gonads; (ii) in th eprimary sexual characters which are derived from the genital imaginal disks; and (iii) in secondary sexual characters such as the adult antennae, maxillary palps and body size. Innate behavioural differences between the sexes reflets dimorphism in the structure and function of the nervous system. elvira idomal_namespace