A branching pattern of variation was central to Darwin’s concept of speciation. As one population of organisms follows one trajectory, another population may spin off in a different direction. When they are sufficiently far apart, they are considered to be separate species. The Galapagos finches have been regarded as exemplars of Darwinian transformation, even leading to the claim that one newly developed population is “behaving as a separate species”. However, the most recent study, from one of the smaller islands (Floreana), concludes that the most likely cause of the disappearance of one of these species is hybridization.
“The authors suggest that hybridization may have been responsible for the disappearance of the large tree finch from Floreana, and that it may now be causing the remaining two species to fuse into one: speciation in reverse.” (p.179)
Please can we have some realism from researchers adhering to the Darwinian paradigm. In the main, their research findings cast light on ecology but they are failing to touch the real challenges facing evolutionary biology.
Of the greatest urgency is attention to educational textbooks. For too long, the Darwinists have maintained a hegemony that resists all critiques of their arguments. Typically, they present any questioning of their interpretation of the evidence as religiously motivated and anti-science. For the good of science, this situation has to change.
For more, go here.