# Tagged Questions

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### Start studying mathematical biology from basics

I am really passionate about theoretical and quantitative biology and I would like to build my future career around this topic. I've just got my bachelor's degree in biology (ecology) but scince I've ...
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### Coalescent theory - independence of coalescent times

Let $T_i$ be the time to coalesce from $n(t)=i+1$ to $n(t)=i$, where $n(t)$ is the number of sites that have not coalesced yet. In the below example the maximum $n(0)=6$. As I understand it, many ...
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### Effects of Genetic Drift on Linkage Disequilibrium

From what I understood of @Canadianer's answer here... Genetic drift randomly causes negative or positive linkage disequilibria, by changing allele frequencies through random sampling. Natural ...
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The genetic variance of a quantitative trait (the quantitative trait in question is fitness) can be express as the sum of two components, the dominance and additive variance: $$\sigma_D^2 + ... 1answer 37 views ### Effective population size when the population sizes varies from season to season Let's think of a species which has four generations per year and which population size changes from season to season so that the population size is 100 in summer, 200 in spring, 50 in autumn and 20 in ... 1answer 66 views ### Chaos theory and population cycles I have just begun to read about Chaos theory and have come across the statement that "Period three implies chaos." My question: Does any odd period imply chaos or only 3? If so, how can populations ... 2answers 128 views ### The Assumption of Weak Selection? I was reading this question and I failed to fully understand the introductory part of it. The OP (@Artem Kaznatcheev) says: Most analytic models like to assume weak selection because it allows ... 1answer 104 views ### Population genetics and the fitness probability distribution. Why is the arithmetic mean all we need? When recording change in allele frequency in diploid, bi-allelic, infinite and panmixic population we usually use this kind of equation: \delta_p = \frac{p * q *( p (w11 - w12) + q * (w12 - ... 1answer 111 views ### How to classify equilibrium points [closed] I have the two differential equations:$$\frac{dN_1}{dt} = N_1(2 - N_1 - 2N_2)\frac{dN_2}{dt} = N_2(3 - N_2 - 3N_1). I worked out the equilibrium points to be at $N_1 = 0, \frac{4}{5}$ and ...
If you are given an unlimited growth model in the form: $\frac {dP(t)}{dt} = k P(t)$ Obviously the population growth would never be unlimited, but let's presume for the moment that we are ...