SO ENDS this curated glimpse into gene life cycles. Pseudogenes, retrogenes, chimeric genes, gene recruitment and modification, gene silencing, and vertical gene transfer can occur at florid rates: there is nothing static in the world of genes. New metabolic pathways, new gene regulatory systems and genetic rewiring all occur continuously on biological timeframes, and all appear to be subject to, and shaped by, the great hand of natural selection by selective survival.