Results 21 to 30 of about 56,592 (279)

Drug Resistance Evolution in HIV in the Late 1990s: Hard Sweeps, Soft Sweeps, Clonal Interference and the Accumulation of Drug Resistance Mutations

open access: yesG3: Genes, Genomes, Genetics, 2020
The evolution of drug resistance in pathogens such as HIV is an important and widely known example in the field of evolutionary medicine. Here, we focus on a unique data set from the late 1990s with multiple viral sequences from multiple time points in ...
Kadie-Ann Williams, Pleuni Pennings
doaj   +1 more source

Soft selective sweeps in evolutionary rescue [PDF]

open access: yesGenetics, 2016
AbstractEvolutionary rescue occurs when a population that is declining in size because of an environmental change is rescued by genetic adaptation. Evolutionary rescue is an important phenomenon at the intersection of ecology and population genetics.
Wilson, Benjamin A.   +2 more
openaire   +3 more sources

The classical hitchhiking model with continuous mutational pressure and purifying selection

open access: yesEcology and Evolution, 2021
Detecting selective sweeps driven by strong positive selection and localizing the targets of selection in the genome play a major role in modern population genetics and genomics.
Wolfgang Stephan
doaj   +1 more source

Network models of frequency modulated sweep detection. [PDF]

open access: yesPLoS ONE, 2014
Frequency modulated (FM) sweeps are common in species-specific vocalizations, including human speech. Auditory neurons selective for the direction and rate of frequency change in FM sweeps are present across species, but the synaptic mechanisms ...
Steven Skorheim   +2 more
doaj   +1 more source

Strong Selective Sweeps on the X Chromosome in the Human-Chimpanzee Ancestor Explain Its Low Divergence. [PDF]

open access: yesPLoS Genetics, 2015
The human and chimpanzee X chromosomes are less divergent than expected based on autosomal divergence. We study incomplete lineage sorting patterns between humans, chimpanzees and gorillas to show that this low divergence can be entirely explained by ...
Julien Y Dutheil   +4 more
doaj   +1 more source

The clarifying role of time series data in the population genetics of HIV.

open access: yesPLoS Genetics, 2021
HIV can evolve remarkably quickly in response to antiretroviral therapies and the immune system. This evolution stymies treatment effectiveness and prevents the development of an HIV vaccine.
Alison F Feder   +2 more
doaj   +1 more source

Genetic draft, selective interference, and population genetics of rapid adaptation [PDF]

open access: yes, 2013
To learn about the past from a sample of genomic sequences, one needs to understand how evolutionary processes shape genetic diversity. Most population genetic inference is based on frameworks assuming adaptive evolution is rare.
Neher, Richard A.
core   +1 more source

Soft selective sweeps in complex demographic scenarios [PDF]

open access: yesGenetics, 2014
Recent studies have shown that adaptation from de novo mutation often produces so-called soft selective sweeps, where adaptive mutations of independent mutational origin sweep through the population at the same time. Population genetic theory predicts that soft sweeps should be likely if the product of the population size and the mutation rate towards ...
Wilson, Benjamin A   +2 more
openaire   +3 more sources

More effective drugs lead to harder selective sweeps in the evolution of drug resistance in HIV-1

open access: yeseLife, 2016
In the early days of HIV treatment, drug resistance occurred rapidly and predictably in all patients, but under modern treatments, resistance arises slowly, if at all.
Alison F Feder   +5 more
doaj   +1 more source

Private selective sweeps identified from next-generation pool-sequencing reveal convergent pathways under selection in two inbred Schistosoma mansoni strains. [PDF]

open access: yesPLoS Neglected Tropical Diseases, 2013
BACKGROUND: The trematode flatworms of the genus Schistosoma, the causative agents of schistosomiasis, are among the most prevalent parasites in humans, affecting more than 200 million people worldwide. In this study, we focused on two well-characterized
Julie A J Clément   +11 more
doaj   +1 more source

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