In both species, a complex social world has driven the evolution of a big, complex brain.
Although neither of these frogs have any known predators, something clearly does prey on them: their high toxicity suggests that selection has driven the evolution of more toxic individuals.
Yamada wonders what would have driven the evolution of the different skull morphologies seen on this species.
Butterfield also thinks animals may have driven the evolution of new microscopic plants that sank faster, taking carbon dioxide with them.
The need for a miniaturized flow pump based on size, application and capacity has driven the evolution from robust size pumps to MEMS based pumps.
Evolutionary psychologist Geoffrey Miller of the London School of Economics claims that art and song are components of human courtship and have driven the evolution of our massive brains.
Female mate choice could have driven the evolution of larger penises in humans".
As with the container ship, the problem of efficient loading and unloading has driven the evolution of the bulk carrier.
These climatic and geographical challenges, along with poor soils, low plant productivity, wide ranges of ecosystem complexity, and a lack of regularly fruiting trees (such as fig trees) have driven the evolution of lemurs' immense morphological and behavioral diversity.
In birds this is thought to have driven the evolution of migration [1], [5], [6].
However, it is unclear whether natural selection has driven the evolution of PCSK9 in vertebrates, especially in primates.
