Genetics Update: Genetic information paper 22 Jan 2010 I have updated my paper on deflating genetic information. The new version is here. Details: A deflation of genetic information ABSTRACT: It is often claimed there is information in some biological entity or process, most especially in genes. Genetic “information” refers to distinct notions, either of concrete properties of molecular… Continue Reading
Biology Darwin was not badly received by the church 26 Nov 2009 Robert J. Berry is a geneticist at University College London. He is also an evangelical Christian and has written a number of works on the compatibility of religion (his kind, anyway) and evolution. He has a quite accurate letter in today’s Nature. Since that is behind a paywall, I have… Continue Reading
Biology Hunting for the Hat Gene 16 Nov 2009 Mark Liberman has a good essay on why we shouldn’t be seeking genes for X here. Continue Reading
Epistemology Darwinian evolution for culture 15 Nov 2009 Following on from my piece about songs and scientists, underverse (Chris Schoen) has taken me to task: … it becomes easy to see one of the flaws in memetic thinking. Changes in “culture” differ from changes in biology in that they are not random; they are directed toward a specific… Continue Reading
Genetics An old question: genes and responsibility 1 Nov 2009 Here’s a judge doing what generations of philosophers and theologians haven’t been able to do: determine when determination is determinative: In the report, [scientists] Pietrini and Sartori concluded that Bayout’s genes would make him more prone to behaving violently if provoked. “There’s increasing evidence that some genes together with a… Continue Reading
Biology Darwin and Blumenbach 28 Oct 200918 Sep 2017 I recently became aware that the probable originator of the “biological” species concept, which I prefer to call the Reproductive Isolation Species Conception*, or RISC, was Johann Friedrich Blumenbach (1752–1840). He presented this in his doctoral thesis On the natural varieties of mankind (1776), and I missed putting it in… Continue Reading
Administrative Travel Diary 5 12 Oct 2009 So, here I am in Oxford, about to go and explore. The conference in Göttingen was absolutely marvellous. I met many interesting people (below the fold I tell you about a few). My only objection was that there was too much data! I’m a philosopher, Jim, not a scientist. Actually,… Continue Reading
Evolution Going backwards, or, devolution? 29 Sep 2009 Carl Zimmer has another one of his excellent summary articles, this time about the problems encountered by a research group that tried to make a protein that had evolved into one form, evolve back to the starting point. This is being touted as a molecular version of “Dollo’s Law” (which is… Continue Reading
Biology Atavisms and phylogeny 15 Sep 20094 Oct 2017 “Everybody knows” that species can lose features through evolution: snakes, whales and sea cows all lost hind limbs. But occasionally, they can “revert”, like the snake shown in the photo below, which has grown one limb. However, many people are confused as to why this happens. Continue Reading
Ecology and Biodiversity New paper on polyploid speciation 27 Aug 2009 For a long time now, people have known of speciation by the multiplication of chromosomes (polyploidy), either of one’s own chromosomes (autopolyploidy) or by doubling a mismatched set from some other species’ chromosomes (allopolyploidy) to even up the numbers and gene complements. Some have thought this to be an uninteresting… Continue Reading