Gene duplication occurs when an error in DNA replication leads to the duplication of a region of DNA containing a (generally functional) gene.
Gene duplication (or chromosomal duplication) is any duplication of a region of DNA that contains a gene; it may occur as an error in homologous recombination, a retrotransposition event, or duplication of an entire chromosome. [1].
Gene duplication Duplication of a gene in the process of replication. One of the duplication products may accumulate mutations and eventually evolve into a gene with a different but related function.
4. Gene Duplication.
Both groups added to the list of human genes that have arisen by repeated duplication (e.g., by unequal crossing over) from a single precursor gene; for examples, ...
Gene duplication is important because it is a way to get new genes. Once a gene has been duplicated one copy can change while the other remains the same.
Margaret Dayhoff proposed an ingenious solution to this rooting dilemma: using ancestral genes that are present in multiple copies in the same organism because of gene duplication.
maritima genome has demonstrated that gene evolution may not give a true picture of organismal evolution; gene duplication, gene loss, and horizontal gene transfer probably account for many inconsistencies in single-gene phylogenies.
A locus in two species is said to be paralogous when it has arisen by gene duplication in one species. Cf orthology.
For example, gene B1, which has arisen by gene duplication in species 2, is paralogous to gene B in species 1.
template A pattern or mold guiding the formation of a duplicate; often used with reference to gene duplication.
temporary parasite Parasite that contacts its host only to feed and then leaves. Also called an intermittent parasite or micropredator.
Gene family A number of genes which resemble each other in DNA sequence, presumably because they have evolved by gene duplication and subsequent divergence.
Gene flow The movement of alleles from one population into another.
Duplication is a type of mutation that involves the production of one or more copies of a gene or region of a chromosome. Gene and chromosome duplications occur in all organisms, though they are especially prominent among plants. Gene duplication is ...
It arose by gene duplication and since it bestows an advantage to the fetus, it was selected for during the evolution of the mammals.
 See also: Duplication, Gene, Protein, Organ, Proteins
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