title: Genetic regulation of sex differences in songbirds and lizards.
abstract: Sex differences in the morphology of neural and peripheral structures related to reproduction often parallel the frequency of particular behaviours displayed by males and females. In a variety of model organisms, these sex differences are organized in development by gonadal steroids, which also act in adulthood to modulate behavioural expression and in some cases to generate parallel anatomical changes on a seasonal basis. Data collected from diverse species, however, suggest that changes in hormone availability are not sufficient to explain sex and seasonal differences in structure and function. This paper pulls together some of this literature from songbirds and lizards and considers the information in the broader context of taking a comparative approach to investigating genetic mechanisms associated with behavioural neuroendocrinology.
authors.affiliation: Departments of Psychology and Integrative Biology, Michigan State University, East Lansing, MI 48824, USA wadej@msu.edu.
authors.forename: Juli
authors.initials: J
authors.lastname: Wade
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D005260:Female; D005786:Gene Expression Regulation / Q000502:physiology*; D008116:Lizards / Q000502:physiology*; D008297:Male; D012737:Sex Factors; D020308:Songbirds / Q000502:physiology*
keywords: androgen; oestrogen; sex chromosome; sexual differentiation
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