Abstract

DARWIN’S FUNDAMENTAL INSIGHT is that evolution consists in “ descent with heritable variations that are sifted by natural selection to retain the adaptive changes.” Contemporary Darwinian biology tends to be restricted to an exclusively twofold focus: first, the gene, which is conceived as the basic element of biological reality, and hence of life, to the extent that it represents the fundamental unit of heredity; and second, selection, which is conceived as the sole source of order in biological organisms, to the extent that inherited genetic variations leading to a better adaptation of an organism to its environment are selected to survive within this environment. This focus is fundamentally reductionist and functional. The integrity of the organism is.