An example of this is found in, in a recent book by Richard Dawkins, where, and here I quote Dawkins, Dawkins says  Lamarckians are traditionally fond of calluses , that is you know, erm, hardened skin, thickened skin, like on the sole of your feet, and he contrasts these Lamarckians who like callouses, with the Darwinian, who he says has a ready answer, in terms of natural selection.