gene-for-gene co-evolution
gene-for-gene co-evolution (GFG co-evolution) A form of co-evolution in which the virulence of a pathogen and the response of its host are governed by corresponding genes in the two organisms: resistance to a pathogen depends on the presence of both a resistance gene in the host and an avirulence gene in the pathogen. Evidence for the phenomenon has been found in associations between crop plants and pathogens, including grasses, herbs, shrubs, and trees, and fungi, viruses, and bacteria. It may also occur between plants and nematodes or insects.
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Pseudogenes , Pseudogenes are defective copies of functional genes. These may be partial or complete duplicates derived from polypeptide-encoding genes or RNA gene… Regulator Gene , regulatory gene In the operon theory of gene regulation, a gene that is involved in switching on or off the transcription of structural genes. When t… gene family , gene family A group of similar or identical genes, usually along the same chromosome, that originate by gene duplication of a single original gene. S… Genes , A common feature of organisms is that offspring tend to look like their parents. For example, tall, brown-eyed parents tend to have tall, brown-eyed… Operon , Operon
An operon is a genetic regulatory system found in prokaryotes and the bacterial viruses (bacteriophages ) that attack bacteria. It is a cluste… repressor , repressor In the operon theory of gene regulation, a protein produced by a regulatory gene that inhibits the activity of an operator gene, and hence…
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gene-for-gene co-evolution