Evolutionary biology is a subdiscipline of the biological sciences concerned with the origin of life and the diversification and adaptation of life forms over time. piggyBat is the only known DNA ...

Genes can be inserted into a genome through genetic engineering. Evolution - AQA Evolution is the change of inherited characteristics within a population over time through natural selection ...

and transitions between species mark the flow of evolution. But in fact, scientists and philosophers have debated for centuries the precise definition of a species. In high school biology we are ...