Removal of beneficial insertion effects prevent the long-term persistence of transposable elements within simulated asexual populations.
BMC Genomics
; 22(1): 241, 2021 Apr 07.
Article
em En
| MEDLINE
| ID: mdl-33827443
ABSTRACT
BACKGROUND:
Transposable elements are significant components of most organism's genomes, yet the reasons why their abundances vary significantly among species is poorly understood. A recent study has suggested that even in the absence of traditional molecular evolutionary explanations, transposon proliferation may occur through a process known as 'transposon engineering'. However, their model used a fixed beneficial transposon insertion frequency of 20%, which we believe to be unrealistically high.RESULTS:
Reducing this beneficial insertion frequency, while keeping all other parameters identical, prevented transposon proliferation.CONCLUSIONS:
We conclude that the author's original findings are better explained through the action of positive selection rather than 'transposon engineering', with beneficial insertion effects remaining important during transposon proliferation events.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Elementos de DNA Transponíveis
/
Evolução Molecular
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
BMC Genomics
Ano de publicação:
2021
Tipo de documento:
Article