Results 21 to 30 of about 7,095,217 (351)

Behavioral Variation in the Pygmy Halfbeak Dermogenys collettei: Comparing Shoals With Contrasting Ecologies

open access: yesFrontiers in Ecology and Evolution, 2021
Variation in biotic and abiotic factors among populations affects individual behaviors by transforming the social landscape and shaping mating systems. Consequently, describing behaviors in natural populations requires consideration of the biological and
Alessandro Devigili   +3 more
doaj   +1 more source

On the origin of species by means of natural selection: Or the preservation of the favoured races in the struggle for life.

open access: yes, 2019
Charles Darwin's seminal formulation of the theory of evolution, "On the Origin of Species" continues to be as controversial today as when it was first published.
C. Darwin
semanticscholar   +1 more source

An experimentally introduced population of Brassica rapa (Brassicaceae). 1. Phenotypic selection over three years following colonization of a novel environment [PDF]

open access: yesPlant Ecology and Evolution, 2018
Background and aims – Despite the importance of selection in driving evolution, little is known about the consistency of selection, particularly in the early stages of colonization of novel environments. This study examines the targets and consistency of
Michael Sekor, Steven Franks
doaj   +3 more sources

Human-Mediated Land Use Change Drives Intraspecific Plant Trait Variation

open access: yesFrontiers in Plant Science, 2021
In the Anthropocene, more than three quarters of ice-free land has experienced some form of human-driven habitat modification, with agriculture dominating 40% of the Earth’s surface.
Hayley Schroeder   +4 more
doaj   +1 more source

Natural Selection and Natural Theology [PDF]

open access: yesNature, 1883
I HAVE just received last week's issue of NATURE from England, and find in it some remarks by Prof. Asa Gray on an article of mine which appeared in the Contemporary Review. As he appears to solicit a further statement of my views, I shall supply a brief explanation of those passages in my article to which he refers.
  +8 more sources

Horizontal transfer and evolution of wall teichoic acid gene cassettes in Bacillus subtilis [version 1; peer review: 1 approved, 2 approved with reservations]

open access: yesF1000Research, 2021
Background: Wall teichoic acid (WTA) genes are essential for production of cell walls in gram-positive bacteria and necessary for survival and variability in the cassette has led to recent antibiotic resistance acquisition in pathogenic bacteria ...
Gary B. Fogel   +6 more
doaj  

Genomic Responses to Climate Change: Making the Most of the Drosophila Model

open access: yesFrontiers in Genetics, 2021
It is pressing to understand how animal populations evolve in response to climate change. We argue that new sequencing technologies and the use of historical samples are opening unprecedented opportunities to investigate genome-wide responses to changing
Murillo F. Rodrigues, Rodrigo Cogni
doaj   +1 more source

THE CAUSES OF NATURAL SELECTION [PDF]

open access: yesEvolution, 1990
We discuss the necessary and sufficient conditions for identifying the cause of natural selection on a phenotypic trait. We reexamine the observational methods recently proposed for measuring selection in natural populations and illustrate why the multivariate analysis of selection is insufficient for identifying the causal agents of selection.
Susan Kalisz, Michael J. Wade
openaire   +3 more sources

Natural Knockouts: Natural Selection Knocked Out

open access: yesBiology, 2017
In functional genomics studies, research is dedicated to unveiling the function of genes using gene-knockouts, model organisms in which a gene is artificially inactivated. The idea is that, by knocking out the gene, the provoked phenotype would inform us
Peter Borger
doaj   +1 more source

Information-Geometric Optimization with Natural Selection

open access: yesEntropy, 2020
Evolutionary algorithms, inspired by natural evolution, aim to optimize difficult objective functions without computing derivatives. Here we detail the relationship between classical population genetics of quantitative traits and evolutionary ...
Jakub Otwinowski   +2 more
doaj   +1 more source

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