Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2000-11-27
Physical Review E, 64, 021906(1-6) (Aug 2001)
Physics
Condensed Matter
Statistical Mechanics
11 pages, 5 figures, 1 table, uses package RevTeX
Scientific paper
10.1103/PhysRevE.64.021906
We introduce a multi-locus genetically acquired phenotype, submitted to mutations and with selective value, in an age-structured model for biological aging. This phenotype describes a single-trait effect of the environment on an individual, and we study the resulting distribution of this trait among the population. In particular, our simulations show that the appearance of a double phenotypic attractor in the ecology induces the emergence of a stable polymorphism, as observed in the Galapagos finches. In the presence of this polymorphism, the simulations generate short-term speciation, when mating preferences are also allowed to suffer mutations and acquire selective value.
de Medeiros G. A.
de Oliveira Suzana Moss
S'a Martins J. S.
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