neutral mutation


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neutral mutation

[′nü·trəl myü‚tā·shən]
(genetics)
A mutation that has no phenotypic effect or adaptive significance.
References in periodicals archive ?
However the SNP of G116C did not affect cashmere traits and was a neutral mutation.
Statistical method for testing the neutral mutation hypothesis by DNA polymorphism.
These neutral mutations are the ones that scientists compare to trace human ancestry.
The second category, nonpathogenic or benign polymorphisms, includes sequence variants that have been previously identified as neutral mutations.
Interesting facts are scattered throughout the book, such as how scientists determine the diets of fossilized organisms, how the molecular clock of neutral mutations can determine the time elapsed since a split from common ancestors, the evolution of complex adaptations (venom before fangs, and probably before snakes), the development of feathers from genes that originally produced scales, and the evolution of the complex eye, to name a few examples.
Applying these functionally neutral mutations, as well as the key mutations, produced a protein that, unlike its older version, bound only cortisol.