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Melville on Science vs. Creation Myth

From Melville's under-appreciated Mardi: On a quest for his missing love Yillah, an AWOL sailor...

Non-coding DNA Function... Surprising?

The existence of functional, non-protein-coding DNA is all too frequently portrayed as a great...

Yep, This Should Get You Fired

An Ohio 8th-grade creationist science teacher with a habit of branding crosses on his students'...

No, There Are No Alien Bar Codes In Our Genomes

Even for a physicist, this is bad: Larry Moran, in preparation for the appropriate dose of ridicule...

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Michael WhiteRSS Feed of this column.

Welcome to Adaptive Complexity, where I write about genomics, systems biology, evolution, and the connection between science and literature, government, and society.

I'm a biochemist

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The next Gene Genie carnival is going to feature a Mother's Day edition right here at Adaptive Complexity. Get your submissions in now!

I haven't contributed a single thing to the platypus genome project, but since my desk sits one floor above where people and robots broke the platypus DNA into chunks, cloned those chunks into bacteria, sequenced the pieces of DNA, and used massive amounts of computing power to assemble the stretches of sequence into a complete genomic whole, I'm going to consider myself somewhat of an authority on the subject and tell you what's wrong with other people's ideas about the platypus.

The genome sequence of the platypus was published Thursday in Nature, and from the press headlines, you could be excused for thinking that genomics has in fact confirmed that the platypus is a freak of nature: part bird, part reptile, and part mammal. The animal certainly looks like it - the platypus has the webbed feet and bill of a duck, and venomous spines and rubbery eggs that remind us of reptiles, but it has fur and feeds its young with milk, so it must be a mammal. The confusing press headlines might even lead you to believe that we sequenced the platypus genome just to figure out what this thing is, when the truth is, as we'll see below, that the genome sequence has essentially confirmed what evolutionary biologists have already deduced about the position of the platypus on the tree of life.

Is the platypus part bird, part reptile part mammal, an amalgam of very different groups of animals? Is it a primitive mammal that resembles the early ancestors of all mammals? Can we figure out just what this creature is by gazing at its genome?


Photo Credit: Stefan Kraft, courtesy of the Wikipedia Commons

Would you recognize a legislative push for Creationism if you saw one? After decades of failed legal strategies to overtly ban evolution or make equal time for Creationism in public schools, the latest tack used by the opponents of evolution is to have 'academic freedom' bills that encourage school teachers to include supposed evidence against evolution, or the presentation of 'both sides' of a controversial issue in science class. If you support the integrity of science education, you should oppose bills like this, both because they are redundant when it comes to good science (teachers already can teach both scientific sides of a legitimate scientific debate), and because the Creationist legislators pushing them are up to no good. But are we reaching a point where Creationism is defining itself out of existence? Are they creating a legal loophole too small for their anti-evolutionary propaganda to fit through?

You've probably heard widely varying estimates for the number of protein-coding genes in the human genome. Back before the genome sequence came out, many scientists guessed that the number was around 100,000. When scientists first looked at the newly completed human genome sequence in 2001, they found about 27,000 genes, and ever since then I have seen estimates ranging from 20,000 to 30,000. The lowest estimate I've ever seen is on the first page of Carl Zimmer's new book, Microcosm , where he states that we have 18,000 protein-coding genes. So what is the answer?
Nerdy comics don't get any funnier than xkcd:
Hillary Clinton has gone off the deep end:
This morning, George Stephanopoulos began his televised interview with Senator Hillary Rodham Clinton by asking if she could name a single economist who supported her plan for a gas-tax suspension. Mrs. Clinton did not.