Search results
Results From The WOW.Com Content Network
A gene family is a set of several similar genes, formed by duplication of a single original gene, and generally with similar biochemical functions.
This is a list of gene families or gene complexes, i.e. sets of genes which are related ancestrally and often serve similar biological functions.These gene families typically encode functionally related proteins, and sometimes the term gene families is a shorthand for the sets of proteins that the genes encode.
Well-studied ohnologous genes include genes in human chromosome 2, 7, 12 and 17 containing Hox gene clusters, collagen genes, keratin genes and other duplicated genes, [27] genes in human chromosomes 4, 5, 8 and 10 containing neuropeptide receptor genes, NK class homeobox genes and many more gene families, [28] [29] [30] and parts of human ...
The basic elements of TreeFam are gene families that can be divided into two parts: TreeFam-A and TreeFam-B families. TreeFam-B families are automatically created. They might contain errors given complex phylogenies. TreeFam-A families are manually curated from TreeFam-B ones. Family names and node names are assigned at the same time.
Gene nomenclature was established by the HUGO Gene Nomenclature Committee (HGNC), a committee of the Human Genome Organisation, for each known human gene in the form of an approved gene name and symbol (short-form abbreviation), which can be accessed through a database maintained by HGNC. Symbols are chosen to be unique, and each gene has only ...
A family can be part of the shell by several evolutive dynamics, for example by gene loss in a lineage where it was previously part of the core genome, such is the case of enzymes in the tryptophan operon in Actinomyces, [20] or by gene gain and fixation of a gene family that was previously part of the dispensable genome such is the case of ...
Concerted evolution is the phenomenon where paralogous genes within one species are more closely related to one another than to members of the same gene family in closely related species. In other terms, when specific members of a family are investigated, a greater amount of similarity is found within a species rather than between species. [1]
Ectopic gene conversion occurs when one homologous DNA sequence is replaced by another. Ectopic gene conversion is the driving force for concerted evolution of gene families. [13] Tandemly arrayed genes are essential to maintain large gene families, such as ribosomal RNA. In the eukaryotic genome, tandemly arrayed genes make up ribosomal RNA.