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A 13 year old female presented with ambiguous external genitalia, right inguinal ovotestis, left ovary, apparently normal Mullerian system, and absent Wolffian system. Cultured lymphocytes showed a 46,XX/46,XY karyotype. Histopathology of the gonads confirmed true hermaphroditism. The presence of two genetically different erythrocyte populations was observed. The findings suggested that the pat...

According to a Greek myth, preserved for us in Ovid and recorded by Rose (1953), Hermaphroditus was the son of Hermes and Aphrodite. A fountain nymph, Salmakis, who fell passionately in love with him, entreated the gods that she might be forever united with him, and her prayer was answered by the combination of lover and loved into a single being a hermaphrodite. By common usage the term hermap...

Female reproductive success in females versus hermaphrodites has been well documented. However, documenting a potential advantage in male fertility of male versus hermaphrodite individuals in subdioecious species is also essential for understanding the evolutionary pathway toward dioecy from hermaphroditism via gynodioecy. Siring success in terms of fruit set, fruit mass, number of seeds and me...

In the genus Fucus, the character dioecy/hermaphroditism has undergone multiple state changes and hybridization is possible between taxa with contrasting mating systems, e.g. between the dioecious Fucus vesiculosus and the hermaphrodite F. spiralis. In the context of mating system evolution, we evaluated the potential consequences of hybridization by studying the variation in sexual phenotype a...

BACKGROUND Shrimp in the genus Lysmata have a unique and rare sexual system referred to as protandric simultaneous hermaphroditism, whereby individuals mature first as male (male phase), and then the female function may also develop as the shrimp grow, so that the gonad is able to produce both eggs and sperms simultaneously, a condition called simultaneous hermaphroditism (euhermaphrodite phase...

An X chromosome counting process determines sex in Caenorhabditis elegans. The dose of X chromosomes is translated into sexual fate by a set of X-linked genes that together control the activity of the sex-determination and dosage-compensation switch gene, xol-1. The double dose of X elements in XX animals represses xol-1 expression, promoting the hermaphrodite fate, while the single dose of X e...

Sex inversion of Epinephelus microdon, a protogynous hermaphrodite was studied using light and electron microscopic criteria. The sex changes takes place within ex-ovarian lamellae in which, in addition to spermatogonia, numerous primordial germ cells (PGCs) were detected. These undifferentiated and bipotential early germ cells are involved, as well as spermatogonia, in the building up of the t...