The seed bank coalescent with simultaneous switching
نویسندگان
چکیده
منابع مشابه
Coalescent Theory for Seed Bank Models
We study the genealogical structure of samples from a population for which any given generation is made up of direct descendents from several previous generations. These occur in nature when there are seed banks or egg banks allowing an individual to leave offspring several generations in the future. We show how this temporal structure in the reproduction mechanism causes a decrease in the coal...
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We identify a new natural coalescent structure, the seed-bank coalescent, which describes the gene genealogy of populations under the influence of a strong seedbank effect, where ‘dormant forms’ of individuals (such as seeds or spores) may jump a significant number of generations before joining the ‘active’ population. Mathematically, our seed-bank coalescent appears as scaling limit in a Wrigh...
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Seed banks are a common characteristics to many plant species, 1 which allow storage of genetic diversity in the soil as dormant seeds for various 2 periods of time. We investigate an above-ground population following a Fisher3 Wright model with selection coupled with a deterministic seed bank assuming 4 the length of the seed bank is kept constant and the number of seeds is large. 5 To assess ...
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Few first-rate biologists start their careers with only one ‘A-level’ (High School qualification) and a job in a copper wire factory. Fewer still go on to command a research budget of £250 million a year. But then Mike Dexter, who takes over this summer as director of the UK’s Wellcome Trust, the world’s biggest medical research charity, has always done things his own way. Dexter joins the Trus...
متن کاملThe Seed Bank of a Reconstructed Prairie
Seed banks, the reserve of viable seeds dormant in the soil, function in several important roles in the population and community dynamics of plant communities. Identification of the seed bank can furnish information on the vegetation history of a habitat, predict the future composition of the plant community, and provide insight on the seed viability and biology of plant species. Although seed ...
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ژورنال
عنوان ژورنال: Electronic Journal of Probability
سال: 2020
ISSN: 1083-6489
DOI: 10.1214/19-ejp401