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In his 1995 book "Darwin's Dangerous Idea: Evolution and the Meanings of Life", philosopher Daniel Dennett refered to Darwin's theory as a "universal acid" which "eats through just about every traditional concept, and leaves in its wake a revolutionized world-view, with most of the old landmarks still recognizable, but transformed in fundamental ways"
I wonder what he would be capable of today where not only we decode DNA, something that he wasn't aware of, but also sequence entire genomes (a group of italian researchers did Pinot Noir's grape two years ago).
Also his great idea appears to be far more complex as DNA sequencing is revealing some interesting things. Of course bold New Scientist dedicated the cover story to it.
Organisms are not only passing their traits down (vertically) to their offsprings, but also across huge taxonomic distances, in what is known as horizontal gene transfer (HGT). This horizontal swapping of genes seems to happen both at unicellular (bacterias) and at multicellular level. HGT in multicellular organisms is known as hybridisation and its most likely caused by viruses and bacterias. Turns out that cow genome contains a piece of snake DNA transfered horizontally by a virus 50 billion yrs ago - the NS goes on mentioning many other examples. I bet gene fusion will reveal that we too have random DNA pieces that support vital functions in the organism.
It seems like there's a big messy shuffling going on; "If there is a tree of life" says John Dupre' at Exeter Uni "it's a small anomalous structure growing out of the web of life".
Well it seems like the tree isn't the only pattern, if there's one at all.
Spettacolo con la Mitsubishi Lancer Evolution X sul circuito di Vizzola
In diretta dalla pista di Vizzola con il test della Mitsubishi Lancer Evolution X
In diretta dalla pista di Vizzola con il test della Mitsubishi Lancer Evolution X
While I was waiting to see the audiologist today, I was reading about the sequencing of the chimpanzee genome and it's comparison with the human genome. Turns out the chimps are only 1.23% divergent from us.
But the image shows something that most people don't understand. Evolution is branching, not linear. And the image makes clear that we and the chimps (Chimpanzees and Bonobos) all share a common ancestor. Go back a little further and we're all related to the great apes, and back even futher and it's the orangutans.
I wonder what happened to the proposal to move chimpanzees from Pan Troglodytes to Homo Troglodytes.
Pânico grava quadro com Aretuza, celebridade da internet que ficou famosa após passar mal em brinquedo, e com as assistentes de palco, as Panicats.
Hopidika: Quando vier nos visitar, lembre-se de não abusar de comidas pesadas, prefira alimentos leves e muitas frutas.
An old library catalogue card for Suzanne Stark Morrow's There was a time: the story of evolution (1965).
Smarthphones are apart of the generation of computers. You can do almost everything you can do on a computer on a smart phone these days. This helps increase mobility as well as creating a lot of convenience.
Evolution? Absolutely not! If anyone has been taught that this is how evolution works, your teacher needs to study up. This is a far reach for even artificial selection. Natural selection works in basically the opposite direction I have presented here. What I have done is basically undo perhaps countless millenia of natural selection in a single generation in captivity. I am very happy with how pretty they turned out though. I'm looking forward to perhaps continuing this study.
(CC) Phillip Jeffrey. www.fadetoplay.com. Feel free to use this photo. I request that you link back to the original picture on Flickr and credit as shown above.
Spettacolo con la Mitsubishi Lancer Evolution X sul circuito di Vizzola
In diretta dalla pista di Vizzola con il test della Mitsubishi Lancer Evolution X
In diretta dalla pista di Vizzola con il test della Mitsubishi Lancer Evolution X