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In subdivided populations, migration acts together with selection and genetic drift and determines their evolution. Building up on a recently proposed method, which hinges on the emergence of a time scale separation between local and global…

种群与进化 · 定量生物学 2015-03-24 Pierangelo Lombardo , Andrea Gambassi , Luca Dall'Asta

While Neutral Theory famously describes the number of discrete genetic differences in populations, we consider the number of genetic backgrounds under which such differences are observed - setting limits to the generalizability of their…

种群与进化 · 定量生物学 2023-03-21 Andre F. Ribeiro

Phylogenetic diversity is a measure for describing how much of an evolutionary tree is spanned by a subset of species. If one applies this to the (unknown) subset of current species that will still be present at some future time, then this…

亚细胞过程 · 定量生物学 2009-09-29 Beata Faller , Fabio Pardi , Mike Steel

Recent methods have been developed to map single-cell lineage statistics to population growth. Because population growth selects for exponentially rare phenotypes, these methods inherently depend on sampling large deviations from finite…

统计力学 · 物理学 2025-01-16 Trevor GrandPre , Ethan Levien , Ariel Amir

In this article, discrete and stochastic changes in (effective) population size are incorporated into the spectral representation of a biallelic diffusion process for drift and small mutation rates. A forward algorithm inspired by…

种群与进化 · 定量生物学 2024-03-11 Lynette Caitlin Mikula , Claus Vogl

The distribution of genetic polymorphisms in a population contains information about the mutation rate and the strength of natural selection at a locus. Here, we show that the Poisson Random Field (PRF) method of population-genetic…

种群与进化 · 定量生物学 2007-07-18 Michael M Desai , Joshua B. Plotkin

We study the fractional populations in chromosome inherited diseases. The governing equations for the fractional populations are found and solved in the presence of mutation and selection. The physical fixed points obtained are used to…

凝聚态物理 · 物理学 2007-05-23 Seung Pyo Lee , Myung-Hoon Chung , Chul Koo Kim , Kyun Nahm

We consider Random Matrix Theories with non-Gaussian potentials that have a rich phase structure in the large $N$ limit. We calculate the Spectral Form Factor (SFF) in such models and present them as interesting examples of dynamical models…

高能物理 - 理论 · 物理学 2019-07-31 Adwait Gaikwad , Ritam Sinha

A number of discrete time, finite population size models in genetics describing the dynamics of allele frequencies are known to converge (subject to suitable scaling) to a diffusion process in the infinite population limit, termed the…

概率论 · 数学 2021-09-14 Jaromir Sant , Paul A. Jenkins , Jere Koskela , Dario Spano

Evolution of gene regulation is crucial for our understanding of the phenotypic differences between species, populations and individuals. Sequence-specific binding of transcription factors to the regulatory regions on the DNA is a key…

种群与进化 · 定量生物学 2015-11-09 Murat Tuğrul , Tiago Paixão , Nicholas H. Barton , Gašper Tkačik

We consider a continuous-time Bienaym\'e-Galton-Watson process with logistic competition in a regime of weak competition, or equivalently of a large carrying capacity. Individuals reproduce at random times independently of each other but…

概率论 · 数学 2025-01-29 Raphaël Forien

We present a general framework to describe the evolutionary dynamics of an arbitrary number of types in finite populations based on stochastic differential equations (SDE). For large, but finite populations this allows to include…

种群与进化 · 定量生物学 2012-06-13 Arne Traulsen , Jens Christian Claussen , Christoph Hauert

One of the main necessities for population geneticists is the availability of statistical tools that enable to accept or reject the neutral Wright-Fisher model with high power. A number of statistical tests have been developed to detect…

定量方法 · 定量生物学 2010-11-08 Luca Ferretti , Giacomo Marmorini , Sebastian Ramos-Onsins

Consider a population that is expanding in two-dimensional space. Suppose we collect data from a sample of individuals taken at random either from the entire population, or from near the outer boundary of the population. A quantity of…

概率论 · 数学 2026-03-16 Shirshendu Ganguly , Jason Schweinsberg , Yubo Shuai

A probability model is presented for the dynamics of mutation-selection balance in a haploid infinite-population infinite-sites setting sufficiently general to cover mutation-driven changes in full age-specific demographic schedules. The…

种群与进化 · 定量生物学 2007-05-23 David Steinsaltz , Steven N. Evans , Kenneth W. Wachter

When two (possibly different in distribution) continuous-state branching processes with immigration are present, we study the relative frequency of one of them when the total mass is forced to be constant at a dense set of times. This leads…

Evolution on neutral networks of genotypes has been found in models to concentrate on genotypes with high mutational robustness, to a degree determined by the topology of the network. Here analysis is generalized beyond neutral networks to…

种群与进化 · 定量生物学 2015-09-01 Lee Altenberg

We are interested in populations in which the fitness of different genetic types fluctuates in time and space, driven by temporal and spatial fluctuations in the environment. For simplicity, our population is assumed to be composed of just…

概率论 · 数学 2018-12-21 Niloy Biswas , Alison Etheridge , Aleksander Klimek

The aim of this paper is to discuss the role of robustness and diversity in population dynamics in particular to some properties of the multi-step from healthy tissue to fully malignant tumours. Recent evidence shows that diversity within…

种群与进化 · 定量生物学 2010-03-12 Tomas Alarcon , Henrik Jeldtoft Jensen

We study the dynamics of a population subject to selective pressures, evolving either on RNA neutral networks or in toy fitness landscapes. We discuss the spread and the neutrality of the population in the steady state. Different limits…

种群与进化 · 定量生物学 2009-11-13 Sumedha , Olivier C Martin , Luca Peliti