selection coefficient


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selection coefficient

[si′lek·shən ‚kō·i‚fish·ənt]
(genetics)
A measure of the rate of transmission through successive generations of a given allele compared to the rate of transmission of another (usually the wild-type) allele.
References in periodicals archive ?
To predict each SNP's selection coefficient associated with Holstein milk-related traits, we used Fisher's fundamental theorem of natural selection, which states that the rate of increase in fitness of any organism at any time is equal to its genetic variance in fitness at that time (Hartl, 1988).
The specific magnitude of that risk also depended on other parameters or variables (sequence length, selection coefficient, mutation rate).
PARASITISM, CORRECTED MORTALITY (%), SELECTION COEFFICIENT AND PARASITOID EMERGENCE RATE (%) OF BACTROCERA CUCURBITAE PUPAE OF DIFFERENT AGES WHEN THE HOST PUPAE WERE EXPOSED SIMULTANEOUSLY TO 2-DAY-OLD PACHYCREPOIDEUS VINDEMMIAE FEMALES.
One way to accomplish this may be to use Equation 2 (Appendix) to plot allele frequencies during selection acting on a recessive mutation with selection coefficient s<<1, which will allow students to observe that such selection is very slow.
We first calculated the relative fitness and selection coefficients of leaf-miners within each tree group.
That the reciprocal of persistence time is equivalent to the average selection coefficient against a mutant allele in the heterozygous state can be seen by the following simple selection-mutation model,
Comparisons of directional selection coefficient between HL and FP populations planted in their native sites revealed a significant difference for only one trait.
yg] is a common form of the kin selection coefficient (reviewed by Seger 1981; Michod 1982; Queller 1992a).
Indeed, many habitat features that differed between nest sites and random sites showed no relationship to nest site preferences nor did they exhibit significant directional selection coefficients.
In the very rare event that the allele randomly chosen for mutation was already a mutation, the selection coefficient [s.
Relative fitness values for each genotype were determined by the selection coefficient (s) and dominance coefficient (h), as follows: