Mutation rate, as a biological process, denotes the frequency at which heritable changes in nucleotide sequence arise per genome, gene, or nucleotide per cell division or per unit time, driven by intrinsic molecular events such as DNA replication errors, spontaneous base modifications (e.g., deamination, depurination), transposable element activity, and exogenous DNA damage. It is modulated by DNA repair pathways, replication fidelity of polymerases, cell cycle control, and effective population size via selection on mutator or antimutator alleles. Mutation rate shapes genetic variability, influences genome architecture and stability, and constrains or facilitates evolutionary dynamics across cellular and organismal systems.
Many scientific discoveries are serendipitous—the result of chance. Seeing evolution in action in a cheese cave turned out to be exactly that for Benjamin Wolfe, associate professor of biology, and his colleagues.
Molecular & Computational biology
Sep 13, 2025
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A study published in the Proceedings of the National Academy of Sciences by scientists from Israel and Ghana shows that an evolutionarily significant mutation in the human APOL1 gene arises not randomly but more frequently ...
Evolution
Sep 3, 2025
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590
In a study published in Current Biology on August 14, Prof. Miao Wei's team at the Institute of Hydrobiology (IHB) of the Chinese Academy of Sciences and Prof. Zhang Jianzhi's team at the University of Michigan estimated ...
Cell & Microbiology
Aug 20, 2025
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The established conservation practice of relocating animals from large, genetically diverse populations to small communities of inbred endangered species may risk introducing more damaging than beneficial gene variants into ...
Ecology
Aug 6, 2025
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The human genome consists of 3 billion base pairs, and when a cell divides, it takes about seven hours to complete making a copy of its DNA. That's almost 120,000 base pairs per second. At that breakneck speed, one might ...
Cell & Microbiology
Aug 4, 2025
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357
The enzyme AMPD1 plays a key role in muscle energy production and normal muscular function. Loss of AMPD1 activity due to genetic mutations is the most common cause of metabolic myopathy in Europeans, occurring at a frequency ...
Evolution
Jul 14, 2025
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Every living cell must interpret its genetic code—a sequence of chemical letters that governs countless cellular functions. A new study by researchers from the Center for Theoretical Biological Physics at Rice University ...
Molecular & Computational biology
Jul 9, 2025
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