Titlebook: Intersexuality in the Animal Kingdom; Rudolf Reinboth Book 1975 Springer-Verlag Berlin · Heidelberg 1975 biology.endocrinology.genetics.re

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Study of Sex Control of Gametogenesis by Organ Culture in the Oligochaete Annelid , Sav.Ovarian autodifferentiation was primarily shown in amphipod Crustacea by Charniaux-Cotton (1957). The same phenomenon was also described in other Invertebrates, hermaphrodites as well as gonochorists, by Charniaux-Cotton (1965) and Guyard (1971), in isopod crustaceans, ., insects, gastropods, myriapods and nemertines.

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The Sexuality of Pelecypod MolluscsSeveral older studies are devoted to the sexual organization (hermaphroditism or gonochorism) of many pelecypod species. However, the study of the sequence and the modalities of the sexual cycle has been performed in a satisfactory way (to a very limited extent) by the use of thorough cytological investigations.

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Sex-Determination in ,ferentiation into male and female individuals is a consequence of a complex interaction between environmental and genetical factors. Furthermore, the question of how this unstable system of sex-determination was established during evolution will be discussed shortly.

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refore, within the framework of general biology reproduction has all too often been looked at solely from the point of view of genetics. Lively discussions about genotypic versus phenotypic sex determination long dominated the sci­ entific literature on sexuality in animals; this one-sided emphasis has tended978-3-642-66071-9978-3-642-66069-6

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