Affiliation:
1. The authors are in the Department of Biological Sciences, Stanford University, Stanford, CA 94305, USA.
Abstract
REVIEW
There is substantial cytogenetic data indicating that the process of sex determination can evolve relatively rapidly. However, recent molecular studies on the evolution of the regulatory genes that control sex determination in the insect
Drosophila melanogaster
, the nematode
Caenorhabditis elegans
, and mammals suggest that, although certain sex determination regulatory genes have evolved relatively rapidly, other sex determination regulatory genes are quite conserved. Thus, studies of the evolution of sex determination, a process that appears to have elements that undergo substantial evolutionary change and others that may be conserved, could provide substantial insights into the kinds of forces that both drive and constrain the evolution of developmental hierarchies.
Publisher
American Association for the Advancement of Science (AAAS)
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