For example, if heterozygotes at a locus have higher fitness than homozygotes (a scenario known ... of pollen transfer among plants). In the absence of natural selection and genetic drift, gene ...

Natural selection is the process by which some organisms in a population survive and reproduce, while others do not, based on their bodies and behaviour. It is one of the processes by which ...

Today, with access to heretofore unprecedented data sets for the study of human genetic variation, researchers can exploit the genetic signatures of natural selection using novel analytical methods.

A breakthrough method for analyzing the DNA of centuries-old plant samples has given scientists an edge ... large genetic ...