Janet L. Over the last years, research has established that a sexual selection exists and is widespread in the plant and animal kingdoms; b it does not necessarily entail sexual dimorphism; even hermaphrodites have it; c it does not require intelligence or a sophisticated sense of esthetics; even tapeworms and plants choose mates; and d it does not require brawn or even mobility for competition; plants may compete for pollinators, and broadcast spawning invertebrates may also compete for matings. Although discussions of sexual selection often focus on sexual dimorphism, several phenomena that are commonly associated with sexual selection are widespread and highly developed in hermaphrodites. These phenomena include a bizarre and expensive courtship and copulatory behavior, b multiple mating and sperm competition, c rapid evolution of genitalia, d special structures associated with courtship, and e sexual polymorphism.
Sexual selection gradients change over time in a simultaneous hermaphrodite | eLife
A 3-year-old child presented with left sided undescended testis and penoscrotal hypospadias. Chordee correction was performed 18 months back, elsewhere. At laparotomy Mullerian structures were present on left side. On right side testis was normally descended into the scrotum. True hermaphrodite or ovo-testicular disorder of sexual differentiation OVO-DSD is one of the rarest variety of all inter sex anomalies. There have been reports of 46 XY karyotype [ 1 ]. In this condition gonads are asymmetrical having both ovarian and testicular differentiation on either sides separately or combined as ovotestis.
Hermaphroditism , the condition of having both male and female reproductive organs. Hermaphroditic plants —most flowering plants, or angiosperms —are called monoecious, or bisexual. Hermaphroditic animals—mostly invertebrates such as worms , bryozoans moss animals , trematodes flukes , snails , slugs , and barnacles —are usually parasitic, slow-moving, or permanently attached to another animal or plant. In humans, conditions that involve discrepancies between external genitalia and internal reproductive organs are described by the term intersex.
The implication is that using forks was—like being a hermaphrodite —a kind of sexual abnormality. Sprengel, indeed, understood that the hermaphrodite structure of flowers by no means necessarily leads to self-fertilisation. Unfortunately, for the sake of comparison, I was not able to find the prehensile antenn in the hermaphrodite S.