O crivo da selecção natural
20/05/2013 Deixe um comentário
Each generation is a filter, a sieve; good genes tend to fall through the sieve into the next generation; bad genes tend to end up in bodies that die young or without reproducing. Bad genes may pass through the sieve for a generation or two, perhaps because they had the luck to share a body with good genes. But you need more than luck to navigate successfully through a thousand sieves in succession.
– Richard Dawkins, biólogo britânico