balancing selection


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balancing selection

any selective process which maintains a balanced POLYMORPHISM.
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Now, balancing selection would favour possession of both supergenes.
The proportion of nonsynonymous is known to exceed that of synonymous substitutions in the PBR (providing evidence of balancing selection) [29-31], but the number of known synonymous substitutions is also becoming quite substantial.
"When we looked for genetic clues pointing to other, more ancient, examples of balancing selection, we found strong evidence for at least six such regions and weaker evidence for another 119-many more than we expected," said study author Molly Przeworski, PhD, professor of human genetics and of ecology and evolution at the University of Chicago.
Streamlined, this edition has updated research; an updated discussion on correlates of personality dimensions, including neuroticism, extraversion, agreeableness, conscientiousness, and combinations of personality traits; added features that look closely at specific topics; expanded coverage of longitudinal studies; a new theory of stable individual differences; expanded explanation of balancing selection; new material on the evolution of group living and social motivation, the locus of control and real-world outcomes, anger proneness, self-recognition in animals, and intelligence; and new examples and graphics.
Mix-match favoritism, called balancing selection, also shows up in sickle-cell anemia.
104, there is no mention of the window of enhanced silent-site variability around the location of the allozyme polymorphism, discovered by Kreitman and Aguade, which provides compelling evidence for balancing selection. The whole topic of the causes of the evolution of DNA and protein sequences is clearly of little interest to the author (neither Kimura's nor Gillespie's books are mentioned in the list of general reading).
With its expanded produce and meat departments, Food Lion finds itself delicately balancing selection with convenience.
The net result of this balancing selection would be an optimal ovipositor length in a given environment.
However, the concept of a porous genome suggests differential rates of introgression across the genome as a result of different selective pressures; loci under balancing selection are likely to show high rates of introgression, while loci under divergent selection will resist introgression.
These genetic patterns indicate that "balancing selection" took place, Collinge proposes.
The initial plan will be to determine the effect of balancing selection on the evolution of recombination and outcrossing rates.
Scientists call this process "balancing selection."

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