A Review of Sex Determining Mechanisms in Geckos (Gekkota: Squamata)
نویسندگان
چکیده
منابع مشابه
A review of sex determining mechanisms in geckos (Gekkota: Squamata).
Geckos are a species-rich clade of reptiles possessing diverse sex determining mechanisms. Some species possess genetic sex determination, with both male and female heterogamety, while other species have temperature-dependent sex determination. I compiled information from the literature on the taxonomic distribution of these sex determining mechanisms in geckos. Using phylogenetic data from the...
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The extraordinary diversity of sex-determining mechanisms found in nature is thought to have arisen by the addition, modification or replacement of regulators at the upstream end of the sex-determining pathway. The spread of a novel regulator of sex determination can manifest itself by an evolutionary transition between environmental and genetic sex determination, for example, or between male a...
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7. 1. Summary Vertebrates have various sex determining mechanisms. These have been broadly classified as either genotypic sex determination (GSD) or environmental sex determination (ESD). This terminology, however, may obscure the fact that mixtures between genotypic and environmental sex determination exist, or that genotypic and environmental sex determination may, in fact, be the extremes of...
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Biological mechanisms leading to the development of males and females are extremely varied. In the XX/XY system, the male has an unequal pair of chromosomes, while in the ZZ/ZW system, the unequal pair is in the female. Sex can also be determined by the temperature of incubation. Recent research has focused on the identification of sex-determining genes, culminating in the demonstration that th...
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Sex determination refers to the developmental programme that commits the embryo to either the male or the female pathway. The animal kingdom possesses a wealth of mechanisms via which gender is decided, all of which are represented among the insects. This manuscript focuses on a number of insects for which genetic and molecular data regarding sex determination mechanisms are available. The sex ...
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ژورنال
عنوان ژورنال: Sexual Development
سال: 2010
ISSN: 1661-5433,1661-5425
DOI: 10.1159/000289578