natural selection

New research by scientists at the University of California, Davis, shows how natural selection has purged all but the smallest bits of that ancient Neanderthal DNA from modern humans.

Just over 20 years ago, the first study using mitochondrial DNA (mtDNA) to trace prehistoric human migrations was published. In this seminal study, scientists managed to determine that all humans...

How can geneticists tell when a genetic difference between two human populations is an accident and when it’s the result of natural selection? As our species moved out of Africa...

Before efforts to sequence the human genome began, scientists thought they’d find about 100,000 protein-coding genes in the three billion bases pairs of DNA that are found in almost every...