MACHO OU FÊMEA? COMO O SEXO DOS VERTEBRADOS É DETERMINADO.

Autores

DOI:

https://doi.org/10.35172/rvz.2021.v28.573

Palavras-chave:

Determinação e diferenciação sexual, desenvolvimento gonadal, gônada, genes, peixes.

Resumo

A reprodução sexual é a forma de propagação mais antiga e universal utilizada pelos vertebrados. Os mecanismos que controlam a determinação e diferenciação sexual nestes animais são diversos e dependem de uma grande variedade de fatores genéticos bem como em alguns casos de fatores ambientais. O sexo genético pode ser definido por fatores genéticos hereditários que são determinados na fecundação. Por outro lado, a diferenciação gonadal depende da ativação de fatores transcricionais que são expressos durante a janela de diferenciação sexual. Tais fatores podem ter sua expressão alterada por condições ambientais como a temperatura e a osmolaridade dentre outros. Estes processos sexuais são classicamente divididos em determinação e diferenciação sexual, respectivamente. Baseados em tai fatos, esta revisão tem como objetivo mostrar a fundamentação básica dos processos de determinação e diferenciação sexual em vertebrados com ênfase no grupo dos peixes teleósteos.

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2021-11-08

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1.
de Oliveira MA. MACHO OU FÊMEA? COMO O SEXO DOS VERTEBRADOS É DETERMINADO. RVZ [Internet]. 8º de novembro de 2021 [citado 22º de dezembro de 2024];28:1-13. Disponível em: https://rvz.emnuvens.com.br/rvz/article/view/573

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