Phylogenetics: Which was first, TSD or GSD?
Phylogenetics: Which was first, TSD or GSD?
Date
2004-01-01
Authors
Janzen, Fredric
Krenz, J. G.
Janzen, Fredric
Krenz, J. G.
Janzen, Fredric
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Altmetrics
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Janzen, Fredric
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Ecology, Evolution and Organismal Biology
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Ecology, Evolution and Organismal Biology
Abstract
The basic challenge of evolutionary biology is to explain variation or the lack thereof, be it phenotypic, genetic, phy· logenetic, spatial, temporal, and so on. To illustrate, one gross generalization is that phenotypic traits we think of as being very important to organisms tend to be highly conserved (e.g .. binocular vision in vertebrates). probably because the genomic and developmental underpinnings are essentially fiXed. Thus, one striking feature about sex-determining mechanisms (SDMs), a fundamental aspect of sexual or· ganisms, is the enormous variety (Bull1983).
Comments
This is a chapter from Temperature dependent sex determination in vertebrates (2004): 121. Posted with permission.