Essentially, Darwin’s theory of speciation via descent from a common ancestor, and without the connotation that it is a progressive process as, for example, birds with flight can evolve into a flightless species. For him, and for the Modern synthesis, speciation is gradual, rather than saltatory, process arising from the accumulation of point mutations. The tempo of speciation continues to be a controversial topic in evolutionary biology. <\/p>\n
See Biological evolution<\/a>, Darwinism<\/a>, Macroevolution and microevolution, Phyletic gradualism and punctuated equilibrium<\/a>, Speciation<\/a>, Theory of natural selection<\/a><\/p>\n <\/body><\/html><\/p>\n","protected":false},"excerpt":{"rendered":" Essentially, Darwin’s theory of speciation via descent from a common ancestor, and without the connotation that it is a progressive process as, for example, birds with flight can evolve into a flightless species. For him, and for the Modern synthesis, speciation is gradual, rather than saltatory, process arising from the accumulation of point mutations. The … <\/p>\n