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Selection on length mutations after frameshift can explain the origin and retention of the AP3/DEF-like paralogues in Impatiens Naturalis
Janssens, S.; Viaene, T.; Huysmans, S.; Huysmans, S.; Smets, E.F.; Geuten, K..
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...
Tipo: Article / Letter to the editor Palavras-chave: APETALA3 /DEFICIENS C-terminal domain frameshift gene duplication impatiens selection indels 42.43; 42.58.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/449548
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