04Feb 2026 by Post

On Evolution, Here Is What We Can Believe with High Confidence

adenine, biochemists, biology, E. coli, Evolution, First Rule of Adaptive Evolution, fitness, fossil record, gene, gene transcription, genes, genetics, genotype, homology, information, James Tour, lactose, Michael Behe, natural selection, promoter, random mutations, regulatory control, researchers, Rice University, S. cerevisiae, tryptophan, W303, When Can I Trust What Scientists Say? (series), yeast, YouTube videos
In a pair of YouTube videos, Rice University chemist James Tour and I reviewed more than ten recent studies of experimental evolution. Source
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30Jul 2025 by Post

Recurring Design Logic in Attenuation Mechanisms

amino acids, Arginine, attenuation, biology, biosynthesis, blind processes, design logic, DNA, Engineering, enzymes, Evolution, genes, hairpin, histidine, homology, Intelligent Design, leader transcript, mRNA, operon regulation, operons, phenylalanines, prokaryotes, recurring design logic, regulation, Ribosome, RNA polymerase, transcription, translation, tryptophan, unguided processes
Despite the striking parallels between these systems in terms of the design logic, these attenuation systems are not evolutionarily related to one another. Source
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29Jul 2025 by Post

Recurring Design Logic in Operon Regulation

Arginine, bacteria, bacterial cell, bacterial systems, biology, biosynthesis, conformational change, DNA, enzymes, Evolution, evolutionary origins, genes, Intelligent Design, lactose, operons, recurring design logic, regulatory systems, repressor, RNA polymerase, sequence homology, stop codons, structural motif, superfamily, transcriptional hierarchies, tryptophan
As we see in these two examples, the design logic is the same. And yet, these two systems are not evolutionarily related to one another. Source
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