In this scenario, the deleterious allele will remain at an intermediate equilibrium frequency that reflects the balance between gene flow and natural selection. The common conception of evolution ...

Darwin thought that evolution took place over hundreds or ... The Grants had documented natural selection in action. While beak size is clearly related to feeding strategies, it is also related ...

Let us tell you that the theory of evolution by natural selection was first formulated in Darwin's book "On the Origin of Species" in 1859. It is explained that organisms change over time as a ...

The early part of the twentieth century saw evolutionary theory embattled by disagreements over Darwin's emphasis on natural selection ... an uncomfortable fit with evolution, as many scientists ...

While malaria is the best-understood example of an infectious disease that has driven human evolution ... can exploit the genetic signatures of natural selection using novel analytical methods.