Sexual ecology

From an article by Laura Spinney:

Darwin argued that male characteristics evolve because females select mates that display those characteristics. This, according to Joan Roughgarden of the Department of Biological Sciences at Stanford University in California, led to the notion that females are discerning and males promiscuous, eggs expensive and sperm cheap, and a whole area of evolutionary psychology based on those notions that is fundamentally flawed.

Joan Roughgarden is a transgendered woman and the article presents some interesting arguments about gender roles. You will need to register for BioMedNet to view the article, but registration is free:

Darwin overlooked the seahorses