Equation 26 · Part 1 · Evolutionary Biology and Ecology in Practice: An Advanced Technical Guide
Symbol N_e
What this part means
the downward in inferred.
Its job in the formula
is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol N_e→Article meaning
Where the article explains it
Physically linked loci must be excluded or flagged , because the method’s entire logic depends on treating background disequilibrium as drift-generated between unlinked loci; loci close together on the same chromosome carry disequilibrium from physical linkage that has nothing to do with and will bias the estimate upward in apparent LD, downward in inferred .
The passage around this formula
…pairs of loci observed in the sample, and S is the sample size, with the 1/S term correcting for the sampling bias that a finite number of genotyped individuals introduces into even when the true population is large. The practical consequence practitioners have to internalize: is estimated with noise from a finite sample, and that noise itself creates apparent linkage disequilibrium indistinguishable from drift-generated LD unless it is explicitly subtracted — which is exactly what the…
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Sources cited in the article section
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