Scientists…in disagreement!

Yesterday, I reposted an article on homology within the neck and shoulder, which describes an interesting technique of using patterns of gene expression to identify homologous cellular pools; the idea is that we can discern homology more clearly by looking more closely at the molecular mechanisms, rather than focusing on final morphology and tissue derivation. Trust me, if you don’t want to read it all—it’s cool stuff, and one of the interesting points they make is that they’ve traced the fate of a particular bone not found in us mammals, but common in our pre-synapsid ancestors, the cleithrum. They argue from a common cellular origin that this bone has been reshaped into a ridge on our shoulder blade, the scapular spine.

As many readers might know, though, the word “homology,” especially when coupled with a novel technique for its determination, is always good for an argument. This one is no exception.

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My story of faith

Andy says the Washington Post is asking for personal “spiritual stories”. They want it under 400 words, and they’re looking for “a time of crisis that tested your faith, the person who most influenced your beliefs, a life-changing event that shaped your spiritual identity, or a religious teaching or ritual that you find especially moving.” Awww, how heart-warming.

I sent mine in. I doubt that they’ll accept it, so I’ve put a copy below the fold.

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Playboy, paragon of journalism

A reader sent in a quote from this month’s Playboy. They understand.

As politics go, we’re surprised so many readers expect us or any publication to provide “balance,” which reflects a belief in the fallacy that there are two equally valid sides to every story. You see this in the debate over global warming and evolution. Thousands of scientists stand on one side of the issue, recognizing that global warming is a problem and that evolution is firmly established, while only a few detractors stand on the other.

Move over, NY Times. Playboy has a more principled journalistic philosophy than you do (or at least, than some of your staff.)

I’d start reading the magazine, except that every time I’ve opened a copy, I find that I can’t quite get past the pictures. They’re too purty.

More press for the godless

Ho hum, I’m quoted in Nature again this week (do I sound convincingly blasé?) It’s a short news article on Francis Collins’ new book, The Language of God, which I find dreadfully dreary and unconvincing, and I find his argument that “The moral law is a signpost to a God who cares about us as individuals. God used a mechanism of evolution to create human beings with whom he could have that kind of fellowship” to be ridiculously unscientific garbage.

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Ken Lay Resurrection Watch

In light of this startling comparison at the Ken Lay funeral, we’re going to have to keep on eye on the urn containing his cremated ashes.

The Reverend Dr. Bill Lawson compared Lay with civil rights leader Martin Luther King Jr. and Jesus Christ, and said his name would eventually be cleared.

I don’t think there’s much risk that he’ll rise again. Can you imagine Satan showing him all the kingdoms of the world, saying “All these things will I give thee, if thou wilt fall down and worship me,” and Kenny Boy failing to rush to his knees and sing hosannas on the spot?

Odontogriphus omalus

A new report in this week’s Nature clears up a mystery about an enigmatic fossil from the Cambrian. This small creature has been pegged as everything from a chordate to a polychaete, but a detailed analysis has determined that it has a key feature, a radula, that places it firmly in the molluscan lineage. It was a kind of small Cambrian slug that crawled over matted sheets of algae and bacteria, scraping away a meal.

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New creationist strategy: throw everyone in a deep hole in the ground, then recite dogma at them

This is funny, in a sad, pathetic kind of way: Helmut visited the Skyline Caverns in Virginia, and once the tour group was 200 feet down, the guide played a canned religious message at them. I’m not sure how I would react to such an occurrence, but I’m sure you’d all wish you could be there, with a camera.

I think I’d give an impromptu counter-lecture. I guess it would depend on the details of what the foolish sermon said.

Development, medicine, and evolution of the neck and shoulder

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Neck anatomy has long terrified me. Way back when I was a grad student, my lab studied the organization and development of the hindbrain, which was relatively tidy and segmental; my research was studying the organization and development of the spinal cord, which was also tidy and segmental. The cervical region, though, was complicated territory. It’s a kind of transitional zone between two simple patterns, and all kinds of elaborate nuclei and new cell types and structural organizations flowered there. I drew a line at the fifth spinal segment and said I’m not even going to look further anteriorly…good thing, too, or I’d probably still be trying to finish my degree.

Fortunately, Matsuoka et al. were braver than I was and they have applied some new molecular techniques to sort out some of the details of how the neck and shoulder are assembled. This is a developmental study of how the muscles and bones of the shoulder girdle and neck are derived, and what they’ve identified is 1) a fairly simple rule for part of the organization, 2) an explanation for some human pathologies, and 3) some interesting observations about evolution. It is very cool to find a paper that ties together molecular genetics, development, paleontology, and medicine together so inseparably.

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