Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rare events in population genetics: Stochastic tunneling in a two-locus
  model with recombination   We study the evolution of a population in a two-locus genotype space, in
which the negative effects of two single mutations are overcompensated in a
high fitness double mutant. We discuss how the interplay of finite population
size, $N$, and sexual recombination at rate $r$ affects the escape times
$t_\mathrm{esc}$ to the double mutant. For small populations demographic noise
generates massive fluctuations in $t_\mathrm{esc}$. The mean escape time varies
non-monotonically with $r$, and grows exponentially as $\ln t_{\mathrm{esc}}
\sim N(r - r^\ast)^{3/2}$ beyond a critical value $r^\ast$.

30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math