The differential survival and/or reproduction of classes of entities that differ in one or more characteristics. To constitute natural selection, the difference in survival and/or reproduction ...

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.

When the theory of evolution was put forth by Alfred Wallace and Charles Darwin in 1859, biological science was in its ... The process is called Natural Selection. Evolution is incremental.

"The bird was completely relaxed in my presence, looking at me inquisitively with one eye and then with ... I remember thinking that this is natural selection in action, here before my eyes ...