This paper examines a new challenge to neo-Darwinism, a movement known
as process structuralism. The process structuralist critique of neo-D
arwinism holds 1) that there are general laws in biology and that biol
ogists should search for these laws; 2) that there are general forms o
f morphology and development and that biologists should attempt to unc
over these forms; 3) that organisms are unified wholes that cannot be
understood without adopting a holistic perspective; and 4) that no spe
cial, causal primacy should be given to the genes in development and m
orphology. This paper places process structuralism in its historical c
ontext, examines the philosophical underpinnings of the movement, and
discusses some of the evidence used to support its claims.