"The vast majority of biologists engaged in evolutionary studies interpret virtually every aspect of biodiversity in adaptive terms", conversely Lynch proposes that "numerous aspects of genomic architecture, gene structure, and developmental pathways are difficult to explain without invoking the nonadaptive forces of genetic drift and mutation"
The frailty of adaptive hypotheses for the origins of organismal complexity.
PNAS May 15, 2007 vol. 104 no. Suppl 1 8597-8604