Question

Gaston (2009) stresses the importance of “integration”. how is this relevant to species ranges as a summary of microevolution and macroevolution?

Answer 1

First of all integration means an act of bringing smaller components into a single system that functions as one together. Microevolution is the change in allele frequencies resulting from natural selection,genetic drift, gene flow, and mutation whereas macroevolution is the large-scale patterns, trends, and rates of change among families and other more inclusive groups of species. When we talk about microevolution it forms an integral form of grand evolution problem and it lies at the base of it. So that we have to understand the minor problems before we can thoroughly comprehend the more general one. There is ambiguity in the ideas as to where to draw a line on "species", "created kinds", and what events and lineages will fall within the rubric of microevolution or macroevolution.