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Top: An ancestral gene duplication produces two paralogs (histone H1.1 and 1.2). A speciation event produces orthologs in the two daughter species (human and chimpanzee). Bottom: in a separate species , a gene has a similar function (histone-like nucleoid-structuring protein) but has a separate evolutionary origin and so is an analog.
The term "ortholog" was coined in 1970 by the molecular evolutionist Walter Fitch. [41] Homologous sequences are paralogous if they were created by a duplication event within the genome. For gene duplication events, if a gene in an organism is duplicated, the two copies are paralogous. They can shape the structure of whole genomes and thus ...
Top: An ancestral gene duplication produces two paralogs (histone H1.1 and 1.2). A speciation event produces orthologs in the two daughter species (human and chimpanzee). Bottom: in a separate species , a gene has a similar function (histone-like nucleoid-structuring protein) but has a separate evolutionary origin and so is an analog.
EVA1C (Eva-1 Homolog C) is a transmembrane protein in humans (Homo sapiens) that is encoded by the EVA1C gene on chromosome 21. The EVA1C protein is thought to be involved in herapin binding activity. In addition, the gene is thought to be associated with diseases such as X-Linked Intellectual Disability-Short Stature-Overweight Syndrome.
Golgi apparatus membrane protein TVP23 homolog B is a protein encoded by the gene TVP23B. This gene has two paralog in the human genome , TVP23C, which is located on chromosome 17 at 17p12, and TVP23A , which is located on chromosome 16.
In Hyphomicrobiales and Enterobacteriales, syntenic genes encode a large number of essential cell functions and represent a high level of functional relationships. [ 15 ] Patterns of shared synteny or synteny breaks can also be used as characters to infer the phylogenetic relationships among several species, and even to infer the genome ...
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English: Top: An ancestral gene duplicates to produce two paralogs (Genes A and B). A speciation event produces orthologs in the two daughter species. Bottom: in a separate species, an unrelated gene has a similar function (Gene C) but has a separate evolutionary origin and so is an analog.