Simulation of Zahavi's handicap principle

Ticona, Armando; Penna, T. J. P.

doi:10.1590/s0103-97332003000300026

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…The full simulated genome can include, other than the age-structured bit-strings used to introduce the biological clock of the individuals, other pairs of bit-strings that encode for phenotype traits that are responsible for intraspecific and/or environmental interactions. With this technique it is possible to establish a computational representation of competition and/or sexual selection [8][9][10]. In our present study, we will use just one extra bit-string to represent a single biological trait.…”

Section: Introductionmentioning

confidence: 99%

Sharp gene pool transition in a population affected by phenotype-based selective hunting

2005

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We use a microscopic model of population dynamics, a modified version of the well known Penna model, to study some aspects of microevolution. This research is motivated by recent reports on the effect of selective hunting on the gene pool of bighorn sheep living in the Ram Mountain region, in Canada. Our model finds a sharp transition in the structure of the gene pool as some threshold for the number of animals hunted is reached. 87.23.-n, 05.10.Ln

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Section: Introductionmentioning

confidence: 99%

Sharp gene pool transition in a population affected by phenotype-based selective hunting

2005

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“…This model is therefore more complicated than the gamete recognition of Cebrat and Stauffer [19] based on one bit. It has some similarity with the peacock tail or bird song simulations in [20].…”

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confidence: 76%

Love Kills: Simulations in Penna Ageing Model

Stauffer

Cebrat

Penna

et al. 2011

Int. J. Mod. Phys. C

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The standard Penna ageing model with sexual reproduction is enlarged by adding additional bit-strings for love: Marriage happens only if the male love strings are sufficiently different from the female ones. We simulate at what level of required difference the population dies out.Love may have been a female invention long ago, when the brain of genus homo became large and required more food [1]. Thus the father was needed to help feed mother and baby. We try to check here if the restriction in the number of suitable mates caused by love can drive the whole population to extinction. First we describe the biology, then our model, and finally our results.For sexual reproduction of diploid organisms, usually two individuals of different gender are necessary (hermaphrodites are the exception). In theoretical concepts, considering a random assortment of genes, any preferences in the selection of partners for reproduction usually are ignored. In fact, it is known that such a selection can be a very important factor for the evolution of the genetic pool of a species. However, the selection of potential mates is only the first step influencing the assortment of genes. Generally, the assortment of genes can be affected at the pre-zygotic stages, like mating preferences or gamete preselection, or at post-zygotic stages, like miscarriage, or any other differential selection of individuals before and during their reproduction period. Sometimes it is difficult to find out at which stage the random assortment is disturbed.The first step generating non-random distribution of genes is the mating preference. There are more and more informations suggesting that there are not only the obvious phenotypic traits like size or strength of the male (or his bank account) which are preferred by females but that there are some other genetic characters which influence the mating decisions or even tune the genetic relations between mating pairs. Odour of individuals is such a trait determined by its genetic configuration. In the generation and recognition of an individual's odour at least two groups of genes are involved. One group is the Major 1

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The penna model for biological aging and speciation

et al. 2004

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namely, the order-disorder conflict. Order, represented by a minimum of the free energy in physical systems, is related to the Darwinian principle of survival of the fittest; disorder, or entropy maximization, is driven by temperature in physical systems and genetic mutations in biological systems.The Penna model for biological aging 2 is based entirely on Darwinian evolution with mutations and is a representation of the Darwinian conflict particularly well suited for computer simulations. It has played a role similar to the Ising model for magnetic systems in the sense that it is a minimal model that retains only the essentials of Darwinian dynamics. Like the Ising model, it uses binary variables to represent genes: zero for ordinary genes and ones for harmful ones. Originally focused on problems of biological aging, application to several different evolutionary problems substantially increased its scope. Our purpose here is to provide an updated review of recent results researchers have obtained with this model. 74Copublished by the IEEE CS and the AIP

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Simulation of Zahavi's handicap principle

Cited by 4 publications

References 13 publications

Sharp gene pool transition in a population affected by phenotype-based selective hunting

Sharp gene pool transition in a population affected by phenotype-based selective hunting

Love Kills: Simulations in Penna Ageing Model

The penna model for biological aging and speciation

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