Thursday, June 14, 2007
Pruning
New Scientist: "The idea of loss in evolution is not new. We know that snakes lost their legs, as did whales, and that our own ancestors lost body hair. However, the latest evidence suggests that the extent of loss might have been seriously underestimated. Some evolutionary biologists now suggest that loss - at every level, from genes and types of cells to whole anatomical features and life stages - is the key to understanding evolution and the relatedness of living things."
