Frequency dependence limits divergent evolution by favouring rare immigrants over residents
Sign Up to like & getrecommendations! Published in 2017 at "Nature"
DOI: 10.1038/nature22351
Abstract: Two distinct forms of natural selection promote adaptive biological diversity. Divergent selection occurs when different environments favour different phenotypes, leading to increased differences between populations. Negative frequency-dependent selection occurs when rare variants within a population… read more here.
Keywords: frequency; selection; rare immigrants; negative frequency ... See more keywords
Negative frequency dependent selection on plasmid carriage and low fitness costs maintain extended spectrum β-lactamases in Escherichia coli
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-53575-7
Abstract: Plasmids may maintain antibiotic resistance genes in bacterial populations through conjugation, in the absence of direct selection pressure. However, the costs and benefits of conjugation for plasmid and bacterial fitness are not well understood. Using… read more here.
Keywords: frequency; selection; negative frequency; fitness ... See more keywords