Query: journal: "Various articles"
|Authors||S. Janssens, T. Viaene, S. Huysmans, S. Huysmans, E.F. Smets, K. Geuten|
|Title||Selection on length mutations after frameshift can explain the origin and retention of the AP3/DEF-like paralogues in Impatiens|
|Journal||Journal of Molecular Evolution|
|Keywords||APETALA3 /DEFICIENS; C-terminal domain; frameshift; gene duplication; impatiens; selection; indels|
|Abstract||Evolution of class B genes through gene duplication has been proposed as an evolutionary mechanism that contributed to the enormous floral diversity. Frameshift mutations are a likely mechanism to explain the divergent C-terminal sequences of MIKC gene subfamilies. So far, the inferences for frameshifts and selective pressures on the C-terminal domain are made for old duplications for which the exact selective pressures are obscured by evolutionary time. This motivated us to study an example of a recent duplication, which allows us to consider in more detail the selective pressures that are involved after duplication. We find that after duplication and frameshift of Impatiens class B genes, the individual codons show no evidence for adaptive selection. It is rather the length of the C-terminal domain that either is strictly conserved or varies strongly. This suggests a role for the length of the C-terminal domain in the retention of duplicated genes.|
|Classification||42.43 , 42.58|
|Download paper|| http://www.repository.naturalis.nl/document/490219 |