Gene family
A group of genes related in structure and often in function. The genes belonging to a gene family are descended from an ancestral gene. For example, the hemoglobin genes of critical importance to red blood cells belong to one gene family created by gene duplication (making extra copies of a gene) and divergence (divergent changes in the copies of the gene).

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multigene family a group of genes with a similar DNA sequence and evolved from a common ancestral gene by duplication and variation; they may cluster on a single chromosome.

Medical dictionary. 2011.

Look at other dictionaries:

  • Gene family — A gene family is a set of several similar genes, formed by duplication of a single original gene, and generally with similar biochemical functions. One such family are the genes for human haemoglobin subunits; the ten genes are in two clusters on …   Wikipedia

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  • gene family — noun A group of closely related genes that make similar gene products …   Wiktionary

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  • Gene — For a non technical introduction to the topic, see Introduction to genetics. For other uses, see Gene (disambiguation). This stylistic diagram shows a gene in relation to the double helix structure of DNA and to a chromosome (right). The… …   Wikipedia

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  • gene duplication — A class of DNA rearrangement that generates a supernumerary copy of a gene in the genome. This would allow each gene to evolve independently to produce distinct functions. Such a set of evolutionarily related genes can be called a gene family …   Dictionary of molecular biology

  • Gene Vincent — Surnom Gégène (en France) Nom Vincent Eugene Craddock Naissance 11 février 1935 Norfolk, en Virginie …   Wikipédia en Français

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