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I am just summarizing ddiez's answer with a small addition. Robustness is the ability of the system to maintain its steady state or at the very least qualitative nature of the steady state with minor changes in the parameters of the system. This is different from stability which actually means the ability of the system to return to its steady state when ...


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I think robustness and plasticity are different concepts, although related to each other. I would define plasticity as the property of a system to adapt to external changes. As defined in the wikipedia page for phenotypic plasticity: Phenotypic plasticity is the ability of an organism to change its phenotype in response to changes in the environment. ...


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Recap of the question: Looking at a single locus trait ($A$) controlled by two alleles, $A_1$ and $A_2$, the phenotypic mean is only affected by inbreeding depression, $f$ (Wright's inbreeding coefficient), if there is some degree of dominance, $d$. Why? Answer: If we take inbreeding as a higher than expected frequency of homozygotes, such that if the ...


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First of all, here is a program which simulates the evolution of the G-matrix over multiple generations, it's a few years old (they seem to have stopped developing it) and I've only played with it briefly. This could solve how to model the evolution of the G-matrix. Fisher's fundamental theorem is a great place to start off with the theory of this: The ...


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I am presenting a speculative approach since nobody has mentioned about any existent models yet. Assuming that selection is based on performance in certain tasks; performance is a function of traits which in-turn is a function of genotype. Performance is a non-linear function of genotype and selection imposes a cutoff/bandpass filter on the performance ...


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It is certainly possible to use general relationships to predict this. The relationship between population density/abundance and body size is an old topic in ecology, that fall within the field of allometrics (how different features of organisms scale with body size). Your assuption that there is generally a negative relationship is correct, and the ...


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I assume that the figure comes from a section on genetic drift (since this seems likely), and it shows how the allele frequency will change over time under drift in a diploid population. So in short, each line represents the distribution of allele frequencies in different hypothetical populations, that all started with the allele frequencey p=0.5. As for ...



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