Can males contribute to the genetic improvement of a species?
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1997
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Resumo
In the time evolution of finite populations, the accumulation of harmful mutations
in further generations might have lead to a temporal decay in the mean
fitness of the whole population. This, in turn, would reduce the population size
and so lead to its extinction. The production of genetically diverse offspring,
through recombination, is a powerful mechanism in order to avoid this
catastrophic route. From a selfish point of view, meiotic parthenogenesis can
ensure the maintenance of better genomes, while sexual reproduction presents
the risk of genome dilution. In this paper, by using Monte Carlo simulations of
age-structured populations, through the Penna model, I compare the evolution
of populations with different repoductive regimes. It is shown that sexual
reproduction with male competition can produce better results than meiotic
parthenogenesis. This contradicts results recently published, but agrees with the
strong evidence that nature chose sexual reproduction instead of partenogenesis
Ibr most of the higher species.
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Recombination, Monte Carlo methods, Population genetics, Mutations
Citação
BERNARDES, A. T. Can males contribute to the genetic improvement of a species?. Journal of Statistical Physics, v. 86, n. 1, p. 431, jan. 1997. Disponível em: <http://link.springer.com/article/10.1007/BF02180214>. Acesso em: 21 fev. 2017.