There is no theoretical reason to expect evolutionary lineages to increase in complexity with time, and no empirical evidence that they do so. Nevertheless, eukaryotic cells are more complex than prok...
Thus three conclusions emerge from the eye story: (1) it is easier to inherit a ‘vision acquisition device’ than a full-blown hard-wired visual analyser; (2) the visual analyser, once ‘set up’, is ref...
In living organisms, nucleic acid molecules are the only indefinite hereditary replicators, or at least they were until the invention of language and music.