Philosophy of Science
This article offers three contrasting cases of the use of neutrality and drift in molecular evolution. In the first, neutrality is assumed as a simplest case for modeling. In the second and third, concepts of drift and neutrality are developed within the context of population genetics testing and the development and application of the molecular clock.
Dietrich, Michael, "Three Perspectives on Neutrality and Drift in Molecular Evolution" (2006). Open Dartmouth: Faculty Open Access Articles. 20.