In population genetics, the selection coefficient is a measure of the relative fitness of a phenotype. Usually denoted by the letter s, it compares the fitness of a phenotype to another favored phenotype, and is the proportional amount that the considered phenotype is less fit as measured by fertile progeny. s = 0 then is selectively neutral compa...
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http://en.wikipedia.org/wiki/Selection_coefficient
in genetics, a measure of the relative reduction in the contribution that a particular genotype (genetic composition) makes to the gametes (sex ...
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http://www.britannica.com/eb/a-z/s/60
The proportion of progeny or potential progeny not surviving to sexual maturity; usually defined artificially by expressing the fitness of a phenotype as a fraction of the mean or optimal fitness to give the relative fitness, and subtracting this fraction from unity. If the mean size of family in the population is 3.2 and that for a particular geno...
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http://www.encyclo.co.uk/local/20973
(s) Type: Term Definitions: 1. the proportion of progeny or potential progeny not surviving to sexual maturity; usually defined artificially by expressing the fitness of a phenotype as a fraction of the mean or optimal fitness to give the relative fitness, and subtracting this fraction from unity. If the mean size of family in th...
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http://www.medilexicon.com/medicaldictionary.php?t=18727
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