Category: Evolution
Not By Chance: Controlling Affinity Maturation
[Editor’s Note: This is part four of a six-part series from microbiologist Donald L. Ewert responding to Kathryn Applegate, of the BioLogos Foundation, in her arguments that the vertebrate adaptive immune system illustrates the claimed creative the Darwinian mechanism. Previous parts of Ewert’s response can be found at the following links: Part One, Part Two, Part Three.] Pathogen-directed activation of the immune response The initiation of an immune response is designed so that the cellular and molecular components that are best equipped to deal with a pathogen are engaged. There are basically three response pathways. Non-protein antigens that have repeating carbohydrate units on their surface, such as are found on bacteria, can directly activate B cells. These B cell do Read More ›
Who or What Plays the Music of DNA?
As I was driving in to work, the local NPR station had on an interview with a guy who’s involved with gathering billions of seeds of various plant varieties into a “doomsday vault.” It is on a remote Norwegian island and intended as a precaution against the presumed devastations of global warming. There were few surprises in the conversation — the grim mood was well suited to the NPR target audience, which eats this stuff up — apart from one rather interesting question from a listener. The guest, Cary Fowler of the Global Crop Diversity Trust, was asked why his group bothers with seeds. In the future, won’t we be able to reconstitute life from the digital code of DNA? Read More ›
Recapping Responses to Nature‘s Evolution Evangelism Packet
I’ve received quite a bit of positive feedback about the responses to the Nature 15 Evolutionary Gems packet that we’ve been responding to since last summer. As a recap of this series, below are links to the 9 parts responding to what I’ve affectionately called “Nature‘s Evolution-Evangelism Packet.” Also, we’ve compiled the responses into a single PDF that can be used for educational purposes: Part 1: Evaluating Nature’s 2009 “15 Evolutionary Gems” Darwin-Evangelism Kit Part 2: Nature’s Microevolutionary Gems Part 1: Lizards, Fish, Snakes, and Clams Part 3: Nature’s Microevolutionary Gems Part 2: Bird-Sized Evolutionary Change Part 4: Nature’s Microevolutionary Gems Part 3: Flea and Guppy-Sized Evolutionary Change Part 5: Nature’s “Gems”: Microevolution Meets Microevolution Part 6: Evolutionary “Gems” or Read More ›
The Human Genome Project Ten Years Later
Scientific American recently reported on what has transpired since the completion of the Human Genome Project ten years ago. When the HGP was first announced in 2000, many scientists said that it would be the key to understanding disease and for developing cures. Ten years later, however, this has not been the case. The human genome project has aided in developing better research and technology, particularly in our abilities to sequence genes. It has also shown us that much of what we once considered junk DNA isn’t really junk at all. (See here, here, here, and here for past ENV discussions on junk DNA). However, scientists are coming to a sobering conclusion that perhaps their models and assumptions on the Read More ›
Francis Collins, Evolution and “Darwin of the Gaps”
Francis Collins is one of the world’s most prominent theistic evolutionists, and now a prominent piece of President Obama’s government. In this clip, God and Evolution contributors and other scholars respond to Francis Collins’ defense of theistic evolution in his book The Language of God. In his book The Language of God: A Scientist Presents Evidence for Belief (2006) and other writings and interviews, Collins has described the paths that led him from atheism to religious belief and from an impatience with “messy” biology and a preference for the pristine realms of physics and chemistry to a fascination with DNA, RNA, and “gene-hunting.” Much of Collins’s case for Darwinian evolution is based on so-called “junk DNA.” This is the part Read More ›