The process produced the sperm in the male flies and egg in the female flies -
Spermatogenesis and oogenesis respectively
Spermatogenesis and oogenesis are the processes of formation of male and female gametes. Spermatogenesis is the process of formation of sperms, whereas oogenesis is the formation of egg or ova.
Spermatogenesis
It is an ongoing differentiation process that occurs in the seminiferous epithelium in the testis in male flies to produce sperm.
Oogenesis
Female flies produce ova or egg by the process called oogenesis in two ovaries made up of approximately 18 ovarioles.
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