Gene Structure: Evolution
Published Online: 14 MAR 2008
Copyright © 2001 John Wiley & Sons, Ltd. All rights reserved.
How to Cite
Ohta, T. 2008. Gene Structure: Evolution. eLS. .
- Published Online: 14 MAR 2008
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Two fundamental processes in the evolution of gene structure in populations are the production of variations by mutations and the natural selection that filters these variations. Mutations occur randomly in genomes of germ cell lineages and are rejected or selected for, so that genes perform needed functions. As a result of minute effects of most mutations, both genetic drift and natural selection influence their fate in a population.
- nucleotide substitution;
- gene duplication;
- natural selection;
- random genetic drift