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Tag: evolution

Cephalopod Genome Evolution Sheds Light On Symbiotic Organs

By investigating symbiotic organs in cephalopods – octopuses and their kin – researchers have found that there may be many evolutionary paths towards the current forms of organs that host symbiotic microbes. Many animals have specialized symbiotic organs. In humans, the appendix may even be one example, safeguarding beneficial bacteria when the gastrointestinal tract is […]

Neutral Evolution: The Randomness That Shapes Our DNA

Darwin famously thought of evolution as a force for creation and improvement. Evolution, in his eyes, was synonymous with natural selection and survival of the fittest – a process that optimizes life to thrive in its environment and produce greater numbers of offspring. A century later, however, the great population geneticist Motoo Kimura challenged this […]