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crAssphage – an ancient virus

Are you what you eat? Or what’s eating you?
Novel virus discovered in half the world’s population

A new study led by researchers at San Diego State University has found that more than half the world’s population is host to a newly described virus, named crAssphage, which infects one of the most common types of gut bacteria, Bacteroidetes. This phylum of bacteria is thought to be connected with obesity, diabetes and other gut-related diseases. . . .It’s unknown how the virus is transmitted, but the fact that it was not found in very young infants’ fecal samples suggests that it is not passed along maternally, but acquired during childhood. The makeup of the viral DNA suggests that it’s circular in structure. Further laboratory work has confirmed that the viral DNA is a singular entity, but it’s proven difficult to isolate. . . .
Some of the proteins in crAssphage’s DNA are similar to those found in other well-described viruses. That allowed Edwards’ team to determine that their novel virus is one known as a bacteriophage, which infects and replicates inside bacteria—and using innovative bioinformatic techniques, they predicted that this particular bacteriophage proliferates by infecting a common phylum of gut bacteria known as Bacteriodetes.
Gut punch
Bacteriodetes bacteria live toward the end of the intestinal tract, and they are suspected to play a major role in the link between gut bacteria and obesity. What role crAssphage plays in this process will be a target of future research.. . .

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Denying the Obvious

Living things appear to be designed for a purpose. That statement is entirely non-controversial. Even the world’s most famous materialist admits it: “Biology is the study of complicated things that give the appearance of having been designed for a purpose.” Richard Dawkins, The Blind Watchmaker: Why the Evidence of Evolution Reveals a Universe Without Design (New York; Norton, 1986), 1. I will go one step further and assert that the appearance of design in living things is far from ambiguous or equivocal; it is overwhelming. Honest materialists do not dispute this assertion either. Dawkins again: Living things “overwhelmingly impress us with the appearance of design as if by a master watchmaker . . .” Id., 21. To be sure, Dawkins Read More ›

Jerry Coyne proven wrong by physicists about the eye

Coyne is not an engineer. He’s sort of a glorified fruitfly farmer. He doesn’t have engineering insights and it shows. He’s also one of the most militant ideologues out there ( protesting the appointment of Francis Collins MD,PhD as head of NIH because Collins was a Christian). Jerry Coyne argues the human eyes is poorly designed: The human eye, though eminently functional, is imperfect—certainly not the sort of eye an engineer would create from scratch … the nerves and blood vessels that attach to our photoreceptor cells are on the inside rather than the outside of the eye, running over the surface of the retina. … The whole system is like a car in which all the wires to the Read More ›

Gordon Davisson’s Talk Origins Post of the Month (October 2000)

I’m not aware of any policy restriction on providing links to TalkOrigins at UD. I’ve linked to TalkOrigins a lot since I’ve criticized it so much in the past. In this case, I actually concur with one of Gordon Davisson’s essays there, and I think it rightly earned Post of the Month 14 years ago at TalkOrigins. When I teach ID, I feel the ideas must defensible to science undergraduate and graduate students and science faculty (physics, chemistry, mathematics, engineering). The internet has been an opportunity to vet some of my ideas. Gordon has been of great assistance with his balanced and insightful critiques of my essays at UD. I link to the Gordon’s essay because we independently arrived at Read More ›