Evolution is an ongoing phenomenon in human populations around the world ... genetic drift and natural selection. Genetic drift refers to random fluctuations in the frequencies of certain genes ...

Many people are. In fact, the ability to digest lactose may be an example of adaptive evolution in the human lineage. Although the study of natural selection in humans is still in an early stage ...

Physiological traits that help Tibetan women survive at high altitudes are being selected for within the population, meaning ...

Charles Darwin developed the theory of evolution by natural selection. All living species are classified using the system developed by Linnaeus. Genetic modification - Edexcel Genetic modification ...