Ontogeny and Phylogeny

The History of Evolution of Organisms consists of two kindred and closely connected parts: Ontogeny, which is the history of the evolution of individual organisms, and Phylogeny, which is the history of the evolution of organic tribes. Ontogency is a brief and rapid recapitulation of Phylogeny, dependent on the physiological functions of Heredity (reproduction) and Adaptation (nutrition). The individual organism reproduces in the rapid and short course of its own evolution the most important ...

 Nucleic Acids Unify Biology

We are now witnessing, after the slow fermentation of fifty years, a concentration of technical power aimed at the essential determinants of heredity, development and disease. This concentration is made possible by the common function of nucleic acids as the molecular midwife of all reproductive particles. Indeed it is the nucleic acids which, in spite of their chemical obscurity, are giving to biology a unity which has so far been lacking, a chemical unity.

 We Inherit from Our Parent's Zygotes

It IS a mistake that biologists used to make, too. They believed that evolution proceeded by accumulating the changes that individuals gathered during their lives. The idea was most clearly formulated by Jean-Baptiste Lamarck, but Charles Darwin sometimes used it, too. The classic example is a blacksmith's son supposedly inheriting his father's acquired muscles at birth. We now know that Lamarckism cannot work because bodies are built from cakelike recipes, not architectural blueprints, and i...

 The History of Analogies Between Biological Evolution and...

From the early days of Darwinism analogies have been drawn between biological evolution and the evolution of culture. Darwin's contemporary Herbert Spencer studied the evolution of civilizations, which he viewed as progressing towards an ideal something like that of Victorian English society. Lewis Morgan's evolutionary theory of society included the three stages of savagery, barbarism, and civilization. The historian Arnold Toynbee used evolutionary ideas in identifying over thirty distinct ...

 A Succinct Definition of a Meme

For something to count as a replicator it must sustain the evolutionary algorithm based on variation, selection and retention (or heredity). Memes certainly come with variation - stories are rarely told exactly the same way twice, no two buildings are absolutely identical, and every conversation is unique - and when memes are passed on, the copying is not always perfect. As the psychologist, Sir Frederic Bartlett (1932) showed n the 1930s, a story get a bit embellished or the details are forg...