Female - Sex Determination

Sex Determination

The sex of a particular organism may be determined by a number of factors. These may be genetic or environmental, or may naturally change during the course of an organism's life. Although most species with male and female sexes have individuals that are either male or female, hermaphroditic animals have both male and female reproductive organs.

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Other articles related to "sex determination, sex, determination":

Crocodilia - Description - Internal Organs
... Crocodilian sex determination is temperature-dependent i.e ... the sex of developing crocodilians is determined by the incubation temperature of the eggs ... This means crocodilians do not have genetic sex determination, but instead have a form of environmental sex determination which is based upon the ...
Temperature-dependent Sex Determination
... Temperature-dependent sex determination (TSD) is a type of environmental sex determination in which the temperatures experienced during embryonic development determine the sex of the offspring ... TSD differs from the chromosomal sex-determination systems common among vertebrates ... It is a type of environmental sex determination (ESD) in other ESD systems, some factors such as population determine the sex of organisms (see Polyphenism) ...
Sex Determination - See Also
... Gender, including biological sex Sexual dimorphism, a phenotypic difference between males and females of the same species, used in sex discernment Sex differences in ...
Polymorphism (biology) - Ecology - The Switch
... Taking sex determination as the example, in humans the determination is genetic, by the XY sex-determination system ... In Hymenoptera (ants, bees and wasps), sex determination is by haplo-diploidy the females are all diploid, the males are haploid ... an environmental trigger determines the sex alligators are a famous case in point ...
Examples of Polyphenism - Sex Determination
... Sex-determining polyphenisms allow a species to benefit from sexual reproduction while permitting an unequal gender ratio ... However, temperature-dependent sex determination (as seen in crocodiles) limits the range in which a species can exist, and makes the species susceptible to endangerment by ... Temperature-dependent sex determination has been proposed as an explanation for the extinction of the dinosaurs ...