directional selection
collocation in Englishmeaningsofdirectionalandselection
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directional
adjective
uk/daɪˈrek.ʃən.əl/us/daɪˈrek.ʃən.əl/
electronicsspecialized
Directional radio equipment receives or sends stronger signals in ...
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selection
noun
uk/sɪˈlek.ʃən/us/səˈlek.ʃən/
the act of choosing someone ...
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(Definition ofdirectionalandselectionfrom theCambridge English Dictionary© Cambridge University Press)
Examplesofdirectional selection
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
They concluded thatdirectionalselectionfor resistance to attack by the parasitoid, and not any kind of rare advantage, is responsible for their results.
From theCambridge English Corpus
Perhaps the clearest prediction is that the effect ofdirectionalselectionon heterogeneity is likely to be greatest when selection is intense.
From theCambridge English Corpus
Most quantitative characters (apart from fitness) are subject to stabilizing selection, while fitness is subject todirectionalselection.
From theCambridge English Corpus
Directionalselectioncan result in very large increases in genetic variance as initially rare alleles increase in frequency.
From theCambridge English Corpus
Predictions are based only on information available at generation zero ofdirectionalselection.
From theCambridge English Corpus
Directionalselectionand the evolution of breeding date in birds.
From theCambridge English Corpus
Therefore,directionalselectionin moderate to large-sized populations is likely to cause an increase in genetic variance.
From theCambridge English Corpus
Alternatively, local selection (without balancing selection within demes) was modelled by assumingdirectionalselectionacting in opposite directions in the two subpopulations.
From theCambridge English Corpus
The terms inside the parentheses of (4) and (7) are the genetic coefficient of variation of fitness traits underdirectionalselection.
From theCambridge English Corpus
Effects on phenotypic variability ofdirectionalselectionarising through genetic differences in residual variability.
From theCambridge English Corpus
Predicting cumulated response todirectionalselectionin finite panmictic populations.
From theCambridge English Corpus
However, if all genes interact via one trait, as here, pairwise epistasis must decrease as 1\#, whereasdirectionalselectiondecreases as 1\ (16).
From theCambridge English Corpus
These predictions were accurate despite the fact that the genetic variances changed by more than 20 % during thedirectionalselectionphase.
From theCambridge English Corpus
The expected average genotypic value for all traits is zero beforedirectionalselection.
From theCambridge English Corpus
One possibility is that inversion frequencies are determined by episodes ofdirectionalselection(including shortlived balancing selection) rather than long-lived balancing selection.
From theCambridge English Corpus
Effective size and polymorphism of linked neutral loci in populations underdirectionalselection.
From theCambridge English Corpus
To simulatedirectionalselection, the optimal value for trait 3 is shifted upwards by 10 phenotypic standard deviation units.
From theCambridge English Corpus
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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