bacterial flagellum

This is the third of five posts in which I reply to Dr. Ian Musgrave’s “Open Letter to Dr. Michael Behe” on the Panda’s Thumb blog. In my reply to Smith I quoted from a review (3) which asked the question why, with so much genetic variation, do we just see “interesting variations” in biological properties. Smith, replying to me on her blog in high dudgeon, quotes the next paragraph of the review which details some of those interesting variations: The long terminal repeat region (LTR) of the HIV genome regulates transcription and viral replication, acting as a promoter responsive to the viral Tat protein. Although all subtypes share the same LTR function, they differ with respect to LTR sequence Read More ›

Dear Readers, This is the third in a series of responses I’m posting this week. In “Evolution of the Bacterial Flagellum” (Microbe Magazine, July 2007), Wong et al seek to counter arguments of intelligent design proponents such as myself that the flagellum did not evolve by random mutation and natural selection. Unfortunately, their otherwise-fine review misunderstands design reasoning and so fails to engage that issue. The critical passage from Wong et al is the first paragraph: Proponents of the intelligent design (ID) explanation for how organisms developed claim that the bacterial flagellum (BF) is irreducibly complex. They argue that this structure is so complicated that it could not have emerged through random selection but had to be designed by an Read More ›