Tree of life

From Quanta Magazine: Researchers build the world’s largest evolutionary tree and conclude that species arise because of chance mutations — not natural selection. What? They are allowed to say that now? One reason scientists are skeptical is that Hedges’ clocklike pattern conflicts with the traditional picture of how evolution unfolds. “The classic view of evolution is that it happens in fits and starts,” Benton said. A change in the environment, such as a rise in temperatures after an ice age, might spark a burst of speciation as organisms adapt to their new surroundings. Alternatively, a single remarkable adaptation such as flight in the ancestors of birds or hair in mammals might trigger a massive expansion of animals with those characteristics. Read More ›

In new species emergence and diversity, according to From ScienceDaily: For the massive meta-study effort, researchers painstakingly assembled data from 2,274 molecular studies, with 96 percent published in the last decade. They built new computer algorithms and tools to synthesize this largest collection of evolutionary peer-reviewed species diversity timelines published to date to produce this Time Tree of Life. The study also challenges the conventional view of adaptation being the principal force driving species diversification, but rather, underscores the importance of random genetic events and geographic isolation in speciation, taking about 2 million years on average for a new species to emerge onto the scene. “This finding shows that speciation is more clock-like than people have thought,” said Hedges. “Taken Read More ›

Last week, one of my comments relating to the KS “bomb” argument was made the subject of an OP, which can be found here. In that comment, I had offered a few preliminary thoughts on Keith’s argument (originally found here, and summarized by him here) and asked a few questions to better understand the assumptions informing his argument. Unfortunately, the issues raised in my OP comment, as far I can tell, were never actually addressed. Instead, the ‘responses’ in the ensuing conversation revolved almost entirely around what the participating ID proponents considered obviously false analogies, which invoked “Planetary Angels”, “Rain Fairies”, “Salt Leprechauns”, and “Toilet Whales”. Regarding these analogies, Keith, Zachriel, and other ID opponents, seemed to be arguing as though ID Read More ›

Keith brought in an argument he claimed to be a “bomb” for ID. It turned out to be a failed suicide mission where the only person that got blown up was Keith. (Please note: I am assuming that life patterns exists in an ONH, as Keith claims, for the sake of this argument only.  Also, there are many other, different take-downs of Keith’s “bomb” argument already on the table.  Indulge me while I present another here.) In my prior OP, I pointed out that Keith had made no case that nature was limited to producing only ONH’s when it comes to biological diversity, while his whole argument depended on it.  He has yet to make that case, and has not Read More ›