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According to a theory proposed by Amotz Zahavi (formulator of the so called Handicap Principle), and others, sexual selection can be seen as a subtype of signal selection, which in it's turn is a subtype of natural selection. The well known example of a signal that is selected for is the tail of the peacock, which signals the high quality of it's owner. ...


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Generalities There are plenty of ways at looking at phenotypes that affect the fitness of the carrier and of other individuals. One of them is group selection and another one is kin selection. Those two concepts are just two different ways of looking at the same processes. Now let's consider only the kin selection way of looking at these processes. You can ...


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First of all, there is a very heated debate about this in the field of social evolution at present, and you aren't likely to get a conclusive answer. One theorist may give you one answer, but another will vehemently disagree. I'll start by logically answering your questions in reverse order! Question 2: Can you please provide an intuitive explanation of why ...


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It is not a regression (not at this stage of the paper, a regression will be done latter) The only complicated thing to understand is $b_i$, which is the 'base relatedness', ie how $i$ is related to a random individual (to be compared to how related it is to individuals with whom it interacts). To simplify let's first consider the situation where $b_i = ...


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There are several subconcepts within the concept of robustness. Several definitions exist for all of these concepts and I am just suggesting one variant of the possible definitions below. Mutational robustness Might be defined as a function of the mean and variance of the distribution of mutational effects. Environmental robustness Might be defined as ...



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