Following the theory of evolution, it is an accumulation of minute mutations over a large period of time that brings about a new species.
@towerwatchman - That is outdated thinking. Things are way more complex than that. Stop using 50 and 100 year old arguments to dispute the science of today!
I’m curious are you even aware of Punctuated Equilibrium? - no I’m not going to help with a bunch spoon feed links for you - do some serious homework for yourself.
How about “Jumping Gene” - ever learn anything about that? Sorry won’t find anything in your ancient texts on the topic, you’ll have to look at very recent work to learn about it.
How about “Adaptive Radiation”?
Timb tries explaining to towerwatchman: If you believe in what you call microevolution, then it is just a matter of time and organisms exposure to various ecological conditions over time, that enough microevolutionary changes become enough that the resulting organism is something other than the organisms it evolved from.
500,000 years = well over 182,500,000 days (since the days were actually a bit shorter, during dinosaur's reign, with roughly 372 days per year). A lot can happen.
Also you seem oblivious to how environmental change and disruption drives much of evolution.
Scientists make their pronouncements based on the facts at hand. Of course, their pronouncements are provisional and change as new evidence and facts get accumulated. @towerwatchman, Why do you feel it’s okay to ignore new lessons?
@towerwatchman - your calculated fraud is in your willingness to ignore evidence and only include what fit’s your world view not matter how out of date or obsolete, misleading or downright fraudulent that information is.
Evolution is fundamentally accumulated change over time - and you are basically demanding that we accept change over time is a fraud.
Evolution is evolution, it begins at the micro level and turns into the macro world.
Where do you get off pretending they are different entities.
Regarding the Finches, what you are missing there is that the finches, they evolved to fit existing niches that have served them well these past 2 million years. That is why some animals don’t change much because their body plan continues working for their circumstance. All very straightforward and rational even if every nuance isn’t absolutely totally understood.
Oh case in point about environment driving change:
On the Origin of Darwin's Finches
Akie Sato, Herbert Tichy, Colm O'hUigin, Peter R. Grant, B. Rosemary Grant, Jan Klein
Molecular Biology and Evolution, Volume 18, Issue 3, March 2001, Pages 299–311,
https ://doi -org/10.1093/oxfordjournals.molbev.a003806
Abstract
Darwin’s finches comprise a group of 15 species endemic to the Galápagos (14 species) and Cocos (1 species) Islands in the Pacific Ocean. The group is monophyletic and originated from an ancestral species that reached the Galápagos Archipelago from Central or South America.
Descendants of this ancestor on the Archipelago then colonized Cocos Island. In the present study, we used sequences of two mitochondrial (mt) DNA segments (922 bp of the cytochrome b gene and 1,082 bp of the control region), as well as two nuclear markers (830 bp of numt2, consisting of 140 bp of mtDNA control region and 690 bp of flanking nuclear DNA; and 740 bp of numt3, consisting of 420 bp of mt cytochrome b sequence flanked by 320 bp of nuclear DNA) to identify the species group most closely related to the Darwin’s finches.
To this end, we analyzed the sequences of 28 species representing the main groups (tribes) of the family Fringillidae, as well as 2 outgroup species and 13 species of Darwin’s finches. In addition, we used mtDNA cytochrome b sequences of some 180 additional Fringillidae species from the database for phylogeny reconstruction by maximum-parsimony, maximum-likelihood, minimum-evolution, and neighbor-joining methods.
The study identifies the grassquit genus Tiaris, and specifically the species Tiaris obscura, as the nearest living relative of Darwin’s finches among the species surveyed. Darwin’s finches diverged from the Tiaris group shortly after the various extant species of Tiaris diverged from one another.
The initial adaptive radiation of the Tiaris group apparently occurred on the Caribbean islands and then spread to Central and South America, from where the ancestors of Darwin’s finches departed for the Galápagos Islands approximately 2.3 MYA, at the time of the dramatic climatic changes associated with the closure of the Panamanian isthmus and the onset of Pleistocene glaciation.