Wetenschap
Were Paul's letters coauthored? And are the resurrection accounts really plausible?
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A review of '40 Years of Evolution: Darwin's finches on Daphne Major Island' by Peter and Rosemary Grant.
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Unexpected DiversityWhen the first cell of an animal—the zygote—divides, it usually has a front end, and a back end, and this orientation will influence how the embryo develops. This orientation is inherited from the egg, where certain gene products are deposited, often at the front end of the egg. These...
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Evolution Creates EvolutionAs I have discussed many times, a single, run-of-the-mill, protein is beyond evolutionary explanation. The fitness landscape in protein sequence space is typically rugged, with occasional spikes representing protein designs. The resources required to evolve even a relatively simple protein exceed what evolution has available by at least...
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“Often, researchers construct a phylogeny using a single gene. This can, however, give an inaccurate picture of the relationship between species -- and can incorrectly place them.” So the industrious team studied “used up to 4065 genes from each termite species to construct the phylogeny.” Good for them. But it...
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Of course, sexual selection could spark new species. Lots of events could. At least in theory. The problem is, it must persist generation after generation to make and maintain a difference. How often can it work that way unchecked in an ecology where a great many other shaping events are...
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